Can allergies cause fever. fever from allergies

• Types of allergic reactions in which the temperature may rise
• How to distinguish the temperature with allergies from the temperature with other diseases

What happens in the body with allergies

In most cases, allergic reactions occur against the background of a previous encounter with the same allergen, and both local and general reactions may occur. Local reactions are different kinds rashes, inflammatory reactions of the mucous membranes respiratory tract, conjunctiva of the eyes, sometimes - joints.

But, in addition to local ones, there are also general reactions due to the formation in the blood of a large number of immune complexes consisting of an allergen and an associated class E antibody. The more such immune complexes, the stronger this reaction, the higher the likelihood of symptoms atypical for allergies.

So, is there a temperature with allergies? Yes, a high temperature with allergies can be the result of an intense general reaction to an allergen, accompanied by the release of a large amount of histamine and other biologically active substances.

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What types of allergies are most commonly associated with fever?

According to medical observations, temperature most often occurs with the following types of allergic reactions.

1. drug allergy - hypersensitivity to diverse medicines, manifested by high, up to 39 degrees or more, temperature and other symptoms: skin rash, itching, signs of general self-poisoning of the body.
2. Serum allergy is an allergy to vaccines and therapeutic sera, which can manifest itself not only with fever, but also with other severe symptoms.
3. Allergy to bites of poisonous hymenoptera insects (bees, wasps, hornets, etc.).

Less often, the temperature with allergies occurs when hypersensitivity to allergenic foods, to pollen and dust, to pet hair.

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From what to distinguish the temperature with allergies

Often, the temperature in case of allergies in a child is not a symptom of the allergy itself, but of a concomitant infectious-allergic process - acute or chronic. Even if there are no manifestations of infection at the time of the temperature, this may indicate that the child's body is in the prodromal period - the period preceding the disease.

Therefore, when a temperature appears in a child with allergies, one should not make hasty conclusions. It is required to carefully examine the baby and exclude all other causes of temperature. If other diseases are found, then it is necessary to prescribe appropriate treatment.

When can one think that a rise in temperature in a child or an adult is due to an allergy?

1. If there is accurate information that the patient has had contact with a substance to which he had previously shown hypersensitivity.
2. If the appearance of temperature coincides with or is associated in time with the patient's contact with the allergen.
3. If, in addition to fever, there are other symptoms of an allergic response to a substance: skin rash, Quincke's edema, signs of anaphylaxis, etc. Moreover, the more pronounced other signs of allergy, the higher the likelihood that the temperature is due precisely allergic reaction.

It is important to remember that temperature cannot be the only manifestation of an allergic reaction, so it is important to evaluate all the complaints and symptoms that bother the patient as a whole.

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Temperature treatment for allergies

A low temperature, up to 37.5-38.0 degrees, does not require taking medications that reduce it. The patient is prescribed the usual treatment: antihistamines, limiting the intake of the allergen, cleansing the body.

A higher and rapidly rising temperature, especially after contact with some kind of allergen, drug or hymenoptera venom, requires urgent treatment medical care. In these cases, an increase in temperature may indicate life threatening an allergic reaction that can develop into such severe manifestations as angioedema (Quincke's edema) or anaphylactic shock.

allergolife.com

Is it possible to increase the temperature with allergies

An allergic reaction, as you know, is a specific work of the immune system that occurs in response to the introduction of a foreign protein.

As a result of such a reaction, certain complexes are formed in the body, which lead to the development of all kinds of manifestations of allergies.

Such a sign as temperature with allergies is enough a rare event, but it is quite possible in certain situations.

If the temperature rises with allergies, then this most often indicates an atypical reaction of the immune system to the allergen that has entered the body.

The jump in temperature is explained with an allergic disease not by a reaction to an allergen, but by the changes that occur during this.

That is, a pronounced inflammatory reaction on the skin, disturbances in the work internal organs can cause febrile syndrome.

Usually, the temperature with allergies rises slightly, that is, up to 37 degrees and much less often up to 38.

In the process of monitoring their patients, allergists have identified a number of allergens, in which the temperature reaction of the body most often develops.

belong to this group.

drug allergy.

Taking some groups of medications can cause skin rashes, itching on the skin, nausea, symptoms of choking and fever, while also not uncommon.

Read more here, Drug Allergies.

Serum intolerance.

Temperature with allergies in many cases occurs with serum sickness, that is, with intolerance to certain proteins that make up sera and vaccines.

In this case, the febrile syndrome can be very pronounced.

Bites of various insects.

Often people in the warm seasons of the year suffer from allergies to insect bites: mosquitoes, bees, small gnats.

With such injuries, due to the introduction of biological fluids toxic to humans, an inflammatory reaction on the skin is strongly pronounced, swelling, hyperemia, itching develop, and temperature is a consequence of all these ongoing changes.

At the same time, it can be not only local, but also general, which is especially typical for young children.

Much less often, the temperature during allergies occurs on foods intolerable to the body, household dust, grass and tree pollen during flowering, animal protein.

The temperature reaction of the body against the background of an allergy can be provoked not only by contact with the allergen, but also by other provoking factors.

To eliminate the manifestations of the disease and improve well-being, it is necessary to choose the right treatment for everything, so it is always important to find out what caused the febrile syndrome.

How to tell if a fever is caused by an allergy

Temperature with allergies manifests itself in almost the same way as fever with viral and other inflammatory diseases.

But the treatment in these cases will be different and the use of an incorrectly selected therapy regimen can adversely affect well-being.

Therefore, it is always important to accurately determine the cause of the temperature jump.

The fact that the temperature during allergies is caused precisely by the introduction and action of the allergen in the body can be independently assumed by the fixation of other signs of an intolerance reaction.

They include:

• Allergen contact. If a person knows that he has an allergic reaction to a certain irritant, then he usually excludes contact with this allergen. And certain signs of deterioration in well-being indicate that the irritant has entered the skin, mucous membranes or the gastrointestinal tract.
• Allergy is also manifested by skin itching, sneezing, expiration of an abundant and transparent secret from the nasal passages.
• Temperature with allergies may be accompanied by itching of the conjunctiva of the eyes, lacrimation, rashes on the body.

With viral and bacterial infections, respiratory symptoms can also be expressed by sore throat, symptoms of intoxication, lethargy, weakness.

An allergy attack upon contact with an irritant usually develops in a few minutes.

Cold manifestations of infection increase gradually and are characterized by certain stages of inflammation.

A high and rapidly rising temperature with allergies indicates a violent reaction of the body to the allergen.

With such intolerance, anaphylactic shock and Quincke's edema very often occur.

Therefore, if you notice increasing shortness of breath, suffocation, increasing swelling of the face, eye area, then you need to call as soon as possible ambulance or ask your doctor for help.

allergiik.ru

The reasons

Temperature with allergies in adults and children can be triggered by the factors shown in the table:

How to determine that the cause of the temperature increase was an allergy?

The temperature with allergies in children and adults is practically no different from a feverish state with colds. But the treatment of these conditions cannot be the same, moreover, if it is wrong, it will certainly affect the person's well-being. That's why true reason temperature rise must be determined accurately.

It should be noted that an allergic reaction is formed quite quickly - its signs can appear already a couple of minutes after contact with the allergen. In turn, a cold begins gradually, it is characterized by a staged development, and, on average, lasts at least 7 days.

Features of temperature for allergies in children

The immune system of a child is not as perfect as that of an adult. Therefore, it is much more difficult for her to be able to resist external pathogenic factors, in particular, allergic irritants. For this reason, allergic reactions occur more often and more acutely.

An allergy with a temperature is more dangerous for a child, as it can lead to serious complications. Therefore, if you suddenly develop a fever after a vaccination, insect bite, or medication, you should not hesitate to seek medical help.

What should be the first aid?

Whether an allergy can give a temperature is an extraordinary question only until the moment when the allergic person himself encounters this condition. If appropriate measures are not taken, the temperature may continue to rise, which will adversely affect well-being. To correct the situation, you should use the following tips to reduce the heat.

1. Eliminate or minimize contact with an irritating factor.
2. Take an antihistamine that was previously prescribed by your doctor. If not done before drug treatment, you can take Suprastin, Zyrtec or Loratadine at the dosage recommended for age. Most often, the effect of an antihistamine completely eliminates not only clinical manifestations pathology, but also the temperature that accompanies it.
3. If an insect bite was recorded and an allergic reaction developed almost immediately, it is necessary to rinse the bite site with plenty of running water as soon as possible and treat it with any anti-allergic ointment. This will help to remove the local inflammatory process.

1. To improve overall well-being, you can take enterosorbents ( Activated carbon, Enterosgel, etc.), which help to eliminate toxins from the body. Also, for this purpose, it is advisable to drink clean non-carbonated water in sufficient quantities.
2. If there is a suspicion that the allergy is caused by a drug, it is necessary to stop using it for at least the next period of time. It is recommended to consult your doctor, who will select an analogue of this drug and exclude additional causes that can cause an increase in temperature in the future.

Treatment

The answer to the question - can there be a temperature with allergies and what should be the treatment, all allergy sufferers should know. If an adult or a child has a fever and all the signs of an allergy are present, first of all, you need to contact a specialist. The main thing is to consult with him in a timely manner, since a further increase in temperature values ​​\u200b\u200bis not excluded, and then complications cannot be avoided.

If the temperature remains within subfebrile condition or slightly exceeds 37 degrees, there is no need to take an antipyretic drug. If its values ​​\u200b\u200bexceeded the mark of 38 degrees and continue to grow, you can give a drug to relieve heat before the doctor arrives. It can be Paracetamol, Nurofen, etc.

To combat the allergy itself, experts prescribe antihistamines. Their action is to inhibit biologically active substance, which provokes the symptoms of pathology. Allergy medications come in three generations. This case requires the use of first generation drugs, as they are stronger and give a quick effect. Their list includes Fenkarol, Suprastin and others.

If the skin has begun to spill out, for the treatment of a rash in adults, preference is given to hormonal ointments(for example, Hydrocortisone, etc.). AT childhood it is desirable to use non-hormonal agents, for example, Panthenol, Bepanten, etc.

allergiyanet.ru

What happens in the body with allergies

Allergic reactions can occur immediately after the body encounters the allergen or appear after a certain time, when an excess of allergenic substances occurs. In any case, both local and general allergic reactions are manifested.

Local symptoms include:

• Rashes of various localization;
• Inflammatory processes of the mucous membranes of the mouth, nose, eyes;
• Inflammatory reactions of the joints.

General symptoms:

• The formation of a large amount of histamine in the blood;
• Increase in the limit of the norm of immunoglobulin class E;
• The appearance of symptoms atypical for allergies.

So, is there a temperature with allergies? The answer will be unequivocal. Yes, with allergies there is a temperature, such a process is due to the fact that the body is oversaturated with allergenic substances. As a result, an intense reaction of the immune system and the release of a large amount of histamine. In addition to the antigen, other active substances are also released.

Allergy sufferers are also interested in: “Is there a temperature with allergies?”. Yes, it happens, and what is the reason for its appearance will be discussed further.

Very often, when a person develops an allergy, the signs and symptoms of the disease at the initial stage of its development are confused with a common infection or cold. But allergens cannot cause inflammatory pathologies, this must be known and remembered.

Why is there a temperature in allergic reactions in children?

Temperature with allergies in a child can be caused by:

• food allergies;
• Intolerance to a certain number of drugs;
• Allergy to dust, pollen, etc.;
• Conducting vaccinations;
• Allergy to hymenoptera and other insect bites.

If, in addition to allergic manifestations and elevated temperature body, the child has other symptoms - these may be symptoms of another disease.

Temperature with allergies in adults, as in children, is provoked by almost identical allergic processes:

• food allergy. Manifestations: rashes, redness of the affected areas of the skin, drops blood pressure, sharp pains in the abdomen, high fever and much more;
• Allergy to drugs. Manifestations: severe itching and peeling of the skin, swelling of the mucous membranes and their inflammation, a sharp increase in temperature ...;
• Allergy to protein. Manifestations: Symptoms can manifest themselves in different ways. With a severe course of the disease, anaphylaxis develops;
• Allergy to wool, pollen. Manifestations: inflammation of the mucous membranes, annoying cough, a slight increase in body temperature.
• Allergy to insect bites. Manifestations: swelling and redness of the affected areas, local or general fever.

Often, at a doctor's appointment, patients are also interested in the following question: “Does the temperature rise with allergies regularly or does it depend on the type of disease?”. As noted above, this process is individual and does not depend on the type of allergic reactions. Most likely, this is an exception to the rules that cause an ambiguous reaction among doctors, but, unfortunately, such a phenomenon occurs.

It is also very difficult to unequivocally answer the question of what temperature with allergies can be. The limit of her jumps is not limited.

The highest rate is observed in people with a predisposition to protein and in childhood after undergoing vaccinations according to an individual schedule.

Facts of raising the temperature with allergies

To refute or make sure that it was allergies that caused the increase in body temperature, we recommend that you find out the following:

1. In rare cases, the temperature can be caused by contact with an allergen to which an allergic reaction has previously manifested.
2. If the temperature appears immediately after the ingestion of the allergenic substance or direct contact with it.
3. If, in addition to temperature, the disease proceeds with a rash on the skin, Quincke's edema, signs of anaphylaxis and other allergic symptoms.

If you find a mistake in the text, be sure to let us know about it. To do this, simply select the text with an error and press Shift+Enter or simply Press here. Thanks a lot!

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Causes of a rise in temperature with allergies

The above is relevant for the "norm", in the general case. But then why does the temperature rise with allergies? If the reaction "grows", expands, acquires a systemic character. The organism loses the remnants of control over the situation, a “global” process develops.

There are other special situations that cause a non-standard course of the disease, for example:

• drug allergy;
• allergy to insect bites;
• photodermatosis;
• serum sickness;
• less often - food allergy.

Thus, the answer to the question of whether an allergy can give a temperature is positive.

Temperature increase in various allergic diseases

Consider some allergic diseases in more detail.

For the nasal mucosa, histamine is the “worst enemy”. It causes swelling, local redness, the appearance of sparse mucous secretions in large quantities, itching.

In the event that lacrimation, a feeling of sand in the eyes and other phenomena of allergic conjunctivitis join the runny nose, an increase in temperature becomes more likely.

Most often, rhinitis develops with seasonal exacerbations, for example, hay fever - allergies to pollen. However, the type or “period of activity” of the allergen cannot be associated with the risk of fever, they are not related to each other.

Therefore, it does not matter in what season of the year an allergic pathology developed - whether in spring, at the time of flowering of plants, in autumn, when dust mites and mold fungi feel great, or in winter, during the "reign" of cold allergies. And it is impossible to say that hyperthermia develops more often in summer or, for example, in autumn.

Allergic cough and bronchitis

First, it is worth differentiating these concepts. By allergic cough, we will mean reflex attempts to clear the larynx during tickling, “tickling”, hoarseness. But bronchitis is a deeper process that affects the actual bronchi.

In the first case, an allergy develops extremely rarely, there are literally a few such cases. Perspiration and the cough it causes are inherently close to allergic rhinitis and develop as a result of mucosal edema.

But allergic bronchitis with temperature is a slightly more frequent phenomenon. Despite the fact that the presence of hyperthermia accompanying a dry barking cough is a sign of a process of a bacterial or viral nature, there are exceptions.

In favor of allergic bronchitis with hyperthermia, shortness of breath and a productive cough from the first day of illness will testify (returning to the effects of histamine - constriction of the bronchi and increased secretion of mucus). It is worth adding that, among other things, this mediator dilates the vessels of the lungs, increases their permeability, which leads to even more severe edema and narrowing of the bronchi. And, of course, a prerequisite is the presence of contact with the allergen.

This disease is a good illustration of the question of whether there can be subfebrile temperature with allergies. Usually, 38° is the limit, if it reaches it at all. By the way, this is another distinguishing feature: with bacterial or viral bronchitis, the thermometer can “crawl” up to 39.5 ° C.

food allergy

Food allergens are among the least aggressive. In this regard, the development of temperature changes in food allergies is unlikely. However, it is possible. Hyperthermia will develop when there is a very strong reaction with the presence of:

• indomitable repeated vomiting;
• profuse diarrhea;
• intense pain in the abdomen;
• headaches, dizziness.

Usually the mercury column does not rise to high numbers. The maximum is 37.5°.

Allergic dermatitis

Allergic dermatitis and temperature are rarely combined. For the development of such a complication, the surface of the lesion must be very extensive.

Most often, a “cosmetic” allergy has such serious consequences, in the case when a person did not conduct a preliminary test, but immediately applied the product to a large area of ​​\u200b\u200bthe skin. The risk is especially high when combined sunburn allergic to sunscreen or emollients.

Often the thermometer shows between 37° and 38° when skin manifestations combined with some other - respiratory, ophthalmic, etc. Heat- an even bigger "curiosity". If dermatitis is accompanied by it, you should immediately call a doctor, as a severe generalized reaction may develop.

Photodermatosis

Allergy to the sun itself is difficult to distinguish from a sunburn. But if one is superimposed on the other, or overheating and sunstroke join, life becomes very difficult. Both of these pathologies carry unpleasant symptoms, but when they are combined, the human condition worsens significantly. Painting sunstroke is:

• high body temperature, sometimes patients complain that the temperature jumps, then up to 39 °, then down to 35 °;
• dizziness;
• nausea, vomiting;
• weakness;
• loss of consciousness;
• disorientation;

But the symptoms of sun allergy are different:

• red blister-like rash on exposed skin;
• itching, peeling of the skin;
• local redness.

Allergy to insect stings

Bites and stings, to which the body reacts with an excessive immune response, are often accompanied by fever. But it must be said that, as in the previous paragraph, here the temperature accompanies not so much the immune processes themselves, but their combination with the main factor (in this case, the effect of insect venom on the body).

Besides, the immune system as if “busy” with allergies and literally does not have time to react to poison.

The temperature in this case can rise to 38 °, deterioration is observed general condition, weakness, often headache. All this is combined with local symptoms:

• hyperemia (redness) of the bite site is much more intense than in the absence of an allergic reaction;
• intense itching;
• the appearance of a rash around the bite;
• the occurrence of allergy symptoms from other organs and systems.

drug allergy

Allergy is like hives with fever, and rash, and swelling - in its “pure form” a reaction to drugs. The temperature in this case rises to 38-39 °.

Generally speaking, drug allergy is one of the most dangerous and severe diseases of an allergic nature. Drugs are introduced into the body in fairly large (compared to the same dust or pollen) doses.

The logical question is why then there are no severe symptoms with gastrointestinal allergies? But not all substances are not completely absorbed in the intestines, they are partially excreted. In addition, the allergen needs to overcome many more barriers to get into the blood.

A life-threatening development of events in drug allergy is anaphylactic shock. Therefore, an increase in temperature can even be called a rather favorable symptom.

In addition to it, there may be:

• itching, rash at the injection site;
• weakness, dizziness;
• sneezing, rhinorrhea, lacrimation;
• soft tissue swelling.

But this pathology confidently answers “yes” to the question of whether there can be a temperature with allergies, because. hyperthermia is one of its main symptoms.

Before describing the disease, it is worth saying that there are 4 types of allergic reactions. Three of them are immediate and one, the fourth, is delayed. What we used to understand as an allergy (including "popular" symptoms and anaphylaxis) is type 1. Type 2 (which, by the way, includes drug allergies) are cytotoxic reactions that damage cells. The fourth type is delayed reactions, such as tuberculosis and bronchial asthma.

Symptoms for all reactions of this type are the same: a week and a half after the allergen enters, first a sharp hypothermia is detected, and then, on the contrary, hyperthermia.

Other symptoms include:

• pain, swelling and redness at the injection site;
• enlargement and soreness of nearby lymph nodes;
• the appearance of a rash on the body, accompanied by intense itching;
• pain, swelling of the joints;
• sometimes laryngeal edema develops;
• the heart muscle is affected;
• suffering nervous system(possible neuritis, sciatica)
• etc.

The only good news is that in most cases, after a few days, all manifestations pass by themselves.

Temperature and allergies in people at risk

Let us consider in more detail the features of the course of allergic reactions with temperature in people from risk groups.

Temperature for allergies in the elderly

Allergy in the elderly, like any other disease, occurs with a much less intense severity of symptoms. To illustrate this thesis, it is worth saying that people over 65-70 do not experience significant pain even with appendicitis.

So with allergic reactions - the symptoms are smoothed out, the diagnosis is difficult, there are practically no subjective sensations. In order for an elderly person to have a fever with allergies, a “giant” reaction is needed, expressed extremely intensely. Such a problem can develop with the introduction of the drug and in the case of serum sickness. The temperature will rise to 37-38°.

Temperature for allergies in pregnant women

However, it should be noted that hyperthermia develops in expecting a child much less frequently than in ordinary women. This is due to the fact that immunity during pregnancy noticeably weakens, allergic reactions are frequent, but they are mostly minor.

The most common of these is allergic rhinitis of pregnancy. Diseases do not tend to generalize the process.

Temperature for allergies in children

The body of a child is much more sensitive to various stimuli than an adult. Therefore, in children, allergies are more likely to cause a rise in temperature.

Dr. E.O. Komarovsky believes that the most important thing is to understand whether allergies are the “culprit”. For example, when figuring out whether an allergic cough bothers a child or an infectious one, it is worth taking as a basis the fact that there should be no temperature reactions with hypersensitivity.

But if the temperature stays up to 38 ° for no particular reason, this may be an allergy. However, other manifestations (allergic rhinitis, conjunctivitis, skin symptoms etc). Children are more likely to have a heightened immune response with fever to vaccinations and medications.

Another option is the appearance of only temperature as the main manifestation of an allergic reaction. This option can only be considered in children. This indicates a low activity of the immune system and, paradoxically, a very serious allergic reaction.

It is only possible to understand that we are talking about an allergy symptom only by the “history data” - whether there was contact with the allergen or, perhaps, the child is in the prodromal (preparatory, preclinical, asymptomatic) period of an infectious disease. In this case, it is urgent to show the baby to the pediatrician.

However, you still need to focus on the fact that with allergies, children should not have a temperature.

Differential Diagnosis

This section is extremely important. Temperature, even a slight one, is quite dangerous symptom. Keeping it for no apparent reason may indicate serious and dangerous diseases(tuberculosis, heart disease, oncology).

As for the temperature during allergies, this phenomenon is non-standard. And that is why it is so important to make sure that hyperthermia is precisely of an allergic nature.

First of all, of course, you need to focus on the accompanying symptoms and build on them.

Briefly, we can say the following:

• With acute respiratory infections, a runny nose is characterized by a viscous, greenish discharge, a tendency to nasal congestion without rhinorrhea. With allergies, on the contrary, the mucus is liquid, transparent, easily and abundantly excreted;
• ARI is characterized by headaches, heaviness in the head, weakness, a desire to close your eyes, hide warmly and sleep. In the clinical picture of allergy, the main symptom is itching.

When observed gastrointestinal symptoms, it is incredibly important to distinguish an allergy from a poisoning or an acute intestinal infection!

During the infectious process, the temperature rises to much higher numbers (39 ° or more), there are:

• blanching of the skin,
• weakness,
• dizziness.
• In severe cases, even loss of consciousness.
• There is always profuse vomiting, constant nausea, there is a danger of dehydration.

It is vital to distinguish severe photodermatosis from heat stroke.

Treatment and prevention of fever

It is worth saying that if the temperature does not rise above 38 ° and does not cause much concern to the patient, it is not necessary to bring it down - it will pass on its own.

The boundaries between medication and folk treatment in this situation are somewhat blurred. The fact is that the first recommendation that any doctor will give is to drink plenty of water. You can drink:

• water;
• decoctions of herbs (for example, chamomile) - be careful! May cause re-allergy, intensifying symptoms!;
• rosehip decoction;
• fruit drink;
• compote.

It is permissible to add lemon, honey (in the absence of allergies to them), mint to drinks.

If the temperature does not drop, apply:

• antipyretics (Paracetamol, for children - Nurofen);
• antihistamines(Claritin, Zirtek, Suprastin, etc.);
• with food allergies - enterosorbents (Smecta, Polysorb).

Don't rush to use hormonal preparations even with local allergies. There is a possibility of an error in the diagnosis, and then with the use of glucocorticoids, the risk of spreading the infection increases significantly.

It is better not to engage in self-treatment of children. If within a few hours on their own, with plenty of fluids and taking 1 dose of Nurofen and an antihistamine, the temperature does not subside, seek medical help.

Prevention of fever with allergies

The most important thing is to prevent the allergy itself, its exacerbations. You can prevent the rise in temperature by:

• the fastest relief (stop, stop) of an allergy attack;
• rejection uncontrolled intake antihistamines;
• timely visit to the doctor.

Allergy-center.com

Can allergies cause fever? In which cases? These questions are increasingly found on various thematic forums on the Internet. Their parents often ask doctors. So, let's try to answer them.

The answer to this question is positive. However, do not think that temperature is a mandatory symptom of an allergic reaction. In this case, it's just the opposite. It is a minor sign, and, as a rule, appears rarely.

In what cases the temperature can rise:

An allergic reaction manifests itself in the form of:

• skin itching;
• sneezing
• sore throat;
• "sand" in the eyes;
• rashes;
• puffiness of the face;
• nausea;
• elevated temperature;
• vomiting;
• dizziness;
• shortness of breath;
• lacrimation;
• rapid pulse.

It is not necessary that all of the above signs will occur with allergies, however, it is still worth knowing about the possibility of their occurrence. How long the symptoms will not subside depends on the correctness of the treatment. What signs will accompany it depends on what caused the allergy.

At mild form body temperature may remain within normal limits or rise slightly. If the mark on the thermometer has not reached 38 degrees, then knocking it down is not required. At acute form it can rise to 39, and sometimes up to 40 degrees. In this case, urgent medical intervention is necessary.

So, if some product became the cause, then the patient may experience abdominal pain. Nausea, diarrhea, vomiting may occur. Also, with food allergies in an adult and a child, symptoms such as a rash, itchy skin and increased sweating may appear.

But an allergic reaction to photodermatosis is characterized by other symptoms, namely:

• peeling of the skin;
• blisters of red color on open areas of the body;
• local redness.

The temperature for allergies in adults, with this type of allergy, can jump. It can be either low or high.

If the allergy was caused by hay fever, then the main symptom will be rhinitis. Also, the patient will have profuse lacrimation, rapid breathing. Possible shortness of breath. This type allergies can also give a temperature, however, it will not exceed 37.8 degrees.

Allergic reactions to insect bites

• swelling at the bite site small rash near him;
• pain and burning in the affected area;
• jumps in blood pressure;
• swelling of the airways and larynx.

The temperature is usually in the range of 37-38 degrees.

Allergy to medicines

• skin rashes;
• dizziness;
• general weakness of the body;
• skin itching;
• intoxication;
• rhinorrhea;
• puffiness of the face.

The temperature, both in an adult and in a baby, can rise to 39 degrees.

A temperature of 37 degrees and above usually always occurs after the introduction of a foreign substance into the body of a child. An allergic reaction in addition to hyperthermia may include:

• swelling, swelling or redness at the injection site;
• soreness, as well as an increase in nearby vessels;
• rash all over body;
• skin itching;
• swelling of the larynx (in rare cases);
• swelling of the joints.

Who Can Get a Severe Allergic Reaction

Most often, fever develops with allergies in children. Allergens are usually foods, medicines, insect bites, as well as foreign substances introduced to them during vaccination. At the end, they may have severe allergy, with allergies, their temperature can rise significantly.

In older people, the opposite is true. Allergy to anything is rare. Even if it develops, it will hardly be noticed. The temperature during an allergic reaction almost never rises. Hyperthermia can develop only during blood transfusion or during the introduction of medications into it.

Interesting fact! In women “in position”, an allergic reaction with temperature occurs less frequently than in women who do not bear a baby. This is due to the fact that the immune system of the former works worse than the latter. Most often, pregnant women develop allergic rhinitis.

Understanding what causes the temperature in some cases is not so easy. The thing is that allergy symptoms often overlap with signs of infectious and bacterial diseases. To establish what is associated with hyperthermia with a rash, rhinitis and other signs, the patient is initially prescribed to take a urine and blood test. Then, depending on their results, an additional examination may be prescribed.

So, the patient can undergo an analysis of blood serum for immunoglobulins. Then, if it has been proven that the cause of the temperature is an allergy, then scratch tests are used to identify the allergen that causes it.

The essence of the analysis

First, doctors clean the patient's hand with alcohol. For this purpose, they can use any other antiseptic. Then a drop of a solution of a substance is applied to the treated area, which, in their opinion, could cause a reaction in the patient. After that, the doctor slightly scratches the skin of the hand with a scarifier and after half an hour they find out whether the substance caused an allergy or something else. So, if the treated area of ​​\u200b\u200bthe skin of the hand turned red, a swelling formed on it, then the allergen was selected correctly. If this does not happen, then the test is negative.

Initially, you need to find out the cause of the reaction and eliminate the allergen. Then give the child or adult an antihistamine. For example, "Cetrin", "Fribris", "Azelastin", "Loratadin".

If the temperature rises during an allergic reaction, then the patient should be given not only an antihistamine, but also an antipyretic. As an antiallergic drug, you can use Suprastin, Diazolin or Dimedrol.

The temperature for allergies in a child should be brought down with the help of Paracetamol Children's or Nurofen syrup. There are preparations in the form of suppositories for babies - "Cefekon D". An adult can be given "Ibuprofen" or "Aspirin".

If the allergy includes a rash, then adults can use corticosteroids. They are not suitable for children. Instead, it is recommended to use anti-allergic ointments. For example, Bepanthen or Panthenol.

If an allergic reaction is accompanied by allergic rhinitis, then to relieve this symptom, it is recommended to use intranasal sprays or drops of a vasoconstrictor or anti-inflammatory action.

Attention! If an allergy with a temperature appears in a child, it is necessary to call a doctor at home, and not try to cope with the disease on your own. If it is treated incorrectly, then it can be delayed, and the risks of various complications also increase.

What not to do with an allergic reaction

1. Soar legs with mustard plasters.
2. Lie in a hot bath.
3. Add a new food to your child's diet.
4. Do inhalation.

So, can there be a temperature with allergies. Yes, it can, but it happens very rarely. As a rule, either it does not increase at all, or it rises slightly. Allergies can cause fever in response to the introduction of a foreign substance during vaccination or blood transfusion. Also, with allergies, hyperthermia can occur if a person has been bitten by an insect. In all other cases, temperature almost never accompanies an allergic reaction.

Video

There is a well-known opinion according to which fever is a sign peculiar only to infection; moreover, its presence indicates that a person definitely does not have manifestations of individual sensitivity. However, this is not entirely correct - much depends on the form of the disease, the severity of the course and other factors. Read more about whether there is a temperature with allergies and what place fever takes in the mechanism of development of immune intolerance, read the article.

Most often, you have to think about this with a runny nose, which at the initial stage of manifestations resembles both the symptoms of individual sensitivity and the picture viral infection. Congestion due to edema, watery transparent selection, itchy nose and sneezing all add up. Therefore, the reference point is body temperature. If the readings on the thermometer overcome the mark of 37 ° C, the diagnosis is clear. Or not?

In fact, allergies and fever are not at all incompatible concepts. Fever often accompanies forms of individual immune sensitivity - for example, such as:

1. Quincke's edema.
2. allergic rhinitis.
3. Pollinosis.
4. Toxicoderma.

Thus, the presence of elevated body temperature cannot serve as a basis for excluding the diagnosis of allergy.

The reasons

Fever is a typical pathological process. It develops according to certain laws and is both a form of the body's response to stimuli and a way of protecting against them. Its occurrence can be caused by a change in the "settings" of the thermoregulation center - that is, the shift of a special thermal adjustment point to a higher level. This happens under the influence of substances called pyrogens. They are divided as:

• primary (viruses, bacteria and other agents that can provoke an immune response - antigens);
• secondary (cytokines (interleukin1a, etc.) - specific proteins that affect the center of thermoregulation)

Antigens are substances that are perceived by the immune system as foreign; they must be defended against - this is the goal of each stage of reactions. Of course, if the mechanism works adequately, this applies only to infectious agents and some other agents that can damage the body; immunity is tuned to identify and destroy them. With distorted sensitivity, aggression is also directed against house dust, animal hair, and cosmetics components; they, like primary pyrogens, activate protective cells, cytokines are released - inflammation and fever occur.

Features of manifestations

Having refuted one erroneous opinion - that there are no febrile reactions with individual intolerance, one should proceed to the second, no less common. It says that the temperature in the case of allergic pathologies does not exceed subfebrile indicators - that is, it is in the range of 37.1-37.5 ° C. This is possible, but does not rule out the possibility of a higher fever. In addition, there are several forms of allergy for which fever is a classic component. clinical picture Let's look at them one by one.

hay fever

This is a pollen allergy that manifests itself:

• nasal congestion;
• redness of the eyes, tearing;
• itching and swelling of the eyelids;
• sneezing, etc.

It is seasonal in nature (occurs during the flowering period of causally significant plants: ragweed, wormwood, etc.). There is no fever or it is within subfebrile values. High happens only with pollen intoxication - this is a variant of the severe course of the disease, in which patients are worried about:

• weakness;
• dizziness;
• loss of appetite;
• sleep disturbance.

Body temperature rises to 38-39 ° C, while there is also chills, a sharp deterioration in general condition, decreased performance, fatigue.

Toxicoderma

It is an acute inflammatory process provoked by contact with allergens, which simultaneously have the properties of toxins, that is, poisons. They enter the body:

1. By inhalation.
2. When swallowed.
3. When making injections.
4. When administered into the rectum, vagina (rectal, vaginal).

Pathology manifests itself:

• skin rash (vesicles, blisters, spots, nodules);
• itching, swelling;
• general weakness;
• in severe cases - nausea, vomiting.

Toxicoderma is very often medicinal - that is, it develops in response to the use pharmacological preparations(antibiotics, sulfonamides, procaine, etc.). It is divided into three degrees, and fever accompanies all but the first. With a moderate lesion, the temperature is subfebrile, and with a severe one, it can rise to 38-39 ° C or more. At the same time, the possibility of infection can not be ruled out - for example, due to scratching of the rash.

This defeat skin and mucous membranes, with the development of which the following symptoms occur:

1. Intense itching.
2. Edema.
3. The appearance of blisters of pink, red, porcelain hue.

Elements of the rash appear suddenly and, as a rule, without symptoms, "harbingers". They can be localized on separate areas (including the soles, palms, scalp) or cover the entire body (general or systemic form). At acute pathology exist no more than 24 hours; disappear quickly, without scarring, secondary skin changes.

Urticaria blisters can merge into single lesions and always turn pale when pressed.

An increase in body temperature (from 37.1 to 39 ° C) appears simultaneously with the onset of a rash and is called "urticaria fever". However, this symptom accompanies only the systemic form of pathology. After the resolution (that is, the disappearance) of the blisters, it also stops (stops).

Quincke's edema

It is swelling of tissues in the area:

• external genital organs;
• mucous membranes - nose, pharynx, larynx, trachea, stomach, etc.

Edema is formed quickly enough, while there is no itching, and the symptoms depend on the localization. So, when located in the larynx, a cough occurs, phenomena increase respiratory failure, and with damage to the digestive tract - nausea, vomiting, etc. Fever, as with urticaria, does not precede edema, but is included in the spectrum of vivid symptoms after it occurs, is in the range of 37.1-39 ° C and disappears when the process is resolved .

Serum sickness

Pathology that became known only with the start of mass production of prophylactic and therapeutic media necessary to prevent or suppress the development of infectious processes - a variety of vaccines, sera, monoclonal antibodies, etc. It is an example of an immunocomplex allergic reaction, characterized by such signs as:

• skin rash;
• swollen lymph nodes;
• burning, itching, swelling, redness in the injection area;
• swelling, pain in the joints;
• nausea, vomiting, etc.

What the fever will be depends on the severity of the course - if the serum sickness is mild, it is at the level of 37.5-38 ° C for 2-3 days. The patient's condition is considered satisfactory. In the second degree, the temperature reaches higher numbers (38-39 ° C) and persists for 1-2 weeks. In severe cases, signs resembling an infection appear:

• redness of the eyes and mucous membrane of the pharynx;
• rash all over body;
• severe weakness.

The temperature is high - 39-40 ° C, observed for a long period of time, exhausting the patient.

Infectious Fever and Allergy: What's the Difference?

Many readers, having read the information in the previous sections, may come to the conclusion that it is rather difficult to distinguish clear differences. This is true; besides, a number of habitual statements concerning a fever are doubtful. For example, the level of increase, which is often taken as a criterion for the severity of the course of the disease, is actually very subjective and depends on the prevalence of the process (local, or local or systemic), age, and the patient's health status. For example, fever with allergies in children is more common than in adults. It is more convenient to describe the most significant nuances in the table:

When assessing the objective signs of fever, it is important to remember that there are not only isolated, but also combined processes.

The infection may precede an allergic reaction to the antibiotics the patient is being treated with, or may occur when the patient scratches itchy areas of skin to bleed. Therefore, it is worth considering the probable causes of violations from all sides.

What should be the treatment?

When planning an algorithm of measures designed to improve the patient's well-being, it should be understood that allergy is a process that affects many functional systems of the body. Fever is only one of the symptoms, and it is useless to treat it separately, unless the underlying disease is affected.

How to achieve recovery? Several methods are used:

1. Stopping contact with the allergen (for example, changing the drug that caused the symptoms or moving to an area where there is no flowering of plants with dangerous pollen).
2. Diet (based on the exclusion from the diet of foods that often provoke reactions - citrus fruits, tomatoes, mushrooms, etc.).
3. Drug therapy (carried out with the help of antihistamines (Cetrin, Zirtek), glucocorticosteroids (Prednisolone, Elocom), cromones (Ketotifen, Zaditen) in the form of tablets, ointments, injections).

In the case of the development of some forms of allergies, enterosorbents (Multisorb, Atoxil), diuretics (Furosemide), non-steroidal anti-inflammatory drugs (Nimesil, Indomethacin) are required. The last group of drugs has an antipyretic effect, but they should be used only when there is no other way to fight the fever. If we are talking about a temporary increase in temperature to subfebrile values ​​​​(for example, with urticaria or hay fever), these drugs are useless.

Temperature with allergies in adults is a fairly rare sign. In most cases, upon contact with a foreign protein, an acute reaction of the immune system, skin symptoms and problems with the digestive tract are observed. An increase in temperature is a sign of severe intoxication of the body, an active response to the action of an irritant.

What types of allergies cause fever? What drugs return the indicators to normal? How to distinguish the temperature in infectious diseases and allergies? Answers in the article.

Causes

Deviations from the norm appear with severe allergic inflammation, in large numbers dangerous substance against the background of hypersensitivity of the body. An increase in temperature in adults with allergies is a sign of an active struggle immune cells with a foreign protein that has penetrated the skin and tissues.

On a note:

• sometimes an allergy develops simultaneously with an infectious disease or as a reaction to the administration of a certain drug during the treatment of various diseases;
• poor health, weakened immunity plus exposure to an irritant significantly worsen the patient's condition, cause a complex negative signs, including temperature above normal;
• the weaker the defenses, the easier it is for the stimulus to influence various organs and systems.

Higher temperatures are more often observed with the following types of allergies:

• medical;
• a negative reaction to a bee, hornet or wasp sting;
• immune response to the introduction of serum, vaccine or foreign protein;
• intolerance to wool and saliva of pets.

After many years of observation, doctors found out that the most acute reaction with an active rise in the thermometer is observed with the bites of stinging insects, the use of certain drugs and protein intolerance. The stronger the intoxication, the more the indicators differ from the norm. Negative symptoms with drug, food allergies, with wasp or bee stings often develop after a short period of time after the penetration of irritating substances.

How to distinguish the temperature with allergies from the symptoms of a cold

Adult patients have fairly strong immunity, allergic reactions are less common than in childhood. With reduced immunity, poor diet, addiction to citrus fruits, chocolate, sweets, intolerance to certain drugs, an acute immune response is possible.

The main differences between the signs in acute respiratory infections, viral or bacterial infections and allergic inflammation are summarized in the table:

On a note! After analyzing the signs, the patient and relatives can quite accurately determine whether the temperature has risen with acute respiratory infections, influenza, rubella, or under the influence of an allergen. With any kind of negative reaction, with the development of colds or a viral / bacterial infection, one should not make a common mistake - to self-medicate. Only after visiting a specialist (call a doctor at home), clarifying the diagnosis, therapy begins.

Effective Treatments

Sometimes it is difficult to completely limit the effect of the irritating component (plant pollen, crossing in nature with stinging insects). In this case, you need to protect the body (gauze bandages, nose filters, glasses, frequent washing of clothes), avoid areas where wasps or bees fly.

Basic rules of therapy:

• . Syrups are rarely prescribed for adults. In case of an acute reaction, it is important to take a fast-acting antiallergic agent of the classical group (1st generation) in time:,. With moderate or mild symptoms, new generation allergy medications are prescribed:, and others;
• . The task is to remove the allergen from the body as soon as possible, reduce the load on the immune and digestive system, limit the negative impact on blood vessels and the central nervous system. Sorbent components absorb and remove harmful substances, increase local immunity, and normalize the condition of the intestines. , Polyphepan, Enterumin, White coal, Smekta, Sorbeks, Multisorb,;
• for outdoor use. Ointments are prescribed only against the background of active allergic inflammation. severe forms The immune response is often accompanied by pronounced skin reactions. Glucocorticosteroids for allergies are allowed to be used in a short course to avoid severe side effects. Advantan, Elokom, Lokoid, Flukort, Hydrocortisone ointment;
• antipyretic compounds. Tablets or syrup to normalize temperature indicators should be taken only in a serious condition, with indicators from +38 C and above. A thermometer at +39 degrees with allergic reactions is a rarity. A similar situation is possible only with intoxication against the background of an insect bite or after taking antibiotics. Ibuprofen, Paracetamol, Aspirin, Nurofen. It's important to know: some components of antipyretic drugs increase allergic reactions. For this reason, drugs are selected only by a doctor.

Effective treatments for allergic marginal keratitis of the eyes are described on the page.

Go to the address and read about whether there can be an allergy to carrots and how it manifests itself.

Folk remedies and recipes

Phytopreparations lower the temperature, cleanse the body, exhibit a weak anti-inflammatory effect, and strengthen the immune system. Before use herbal decoctions it is important to consult with an allergist: some plants increase negative symptoms.

Proven funds:

• currant leaf tea. Combine 300 ml of boiling water with 2 tbsp. l. dry or fresh vegetable raw materials (pre-crush the leaves). After half an hour, the composition, infused under a closed lid, is ready for use;
• temperature collection. Chamomile, dried wild rose, coltsfoot - a tablespoon each, linden flowers - 2 tablespoons. Mix the ingredients, pour into a saucepan, pour one and a half liters of boiling water. Boil the composition for 3 minutes, set aside from heat, cover with a lid. After a quarter of an hour, strain the remedy, take half a glass twice a day. Herbal collection is not suitable for patients diagnosed with hay fever;
• nettle decoction. Herbalists recommend a useful remedy for many allergic diseases. For 500 ml of water, you will need a couple of tablespoons of dried or fresh leaves of a burning plant. Pour boiling water over natural raw materials, boil for 2 minutes, insist under the lid for a third of an hour, strain. Take 1/3 cup of decoction daily;
• proven herbal remedy for cleansing the body. Boil water (0.5 l) in a container, add willow or oak bark (a tablespoon), simmer over low heat for 10 minutes, cool. Filter the decoction, use in the morning and evening before meals, a third of a glass.

At background temperature allergic diseases you can not drink tea with honey, raspberries, fat milk with butter. These foods are powerful irritants that increase the negative immune response. Receiving an additional portion of the allergen disrupts the course of therapy, provokes an increase in negative signs.

An increase in temperature with allergies is a reason for taking antihistamines. Antipyretic compounds are needed only at high rates (38 degrees or more). Relief of allergic inflammation eliminates negative symptoms, including fever during acute immune reactions.

An elevated body temperature always indicates that an inflammatory process is taking place in the body, even if it is rather insignificant. A high temperature indicates an active process of the body's fight against infection. Can fever be caused by allergies? On this issue, doctors do not have a single opinion. Usually, an allergy is not accompanied by such a symptom, but a common cold or the onset of a viral disease causes a fever.

If a person has a fever, then he usually does not associate such a symptom directly with an allergy. According to scientists, it develops when there is clash of the immune system with the allergen. The most common causes of an allergic reaction are:

• certain food;
• animal hair;
• medications;
• seasonal flowering plants;
• mold.

They cause severe irritation of the mucous membrane on the face. When a person comes into contact with a substance, allergic, then he immediately has itching, runny nose, nasal congestion. Then he starts sneezing and lacrimation appears. Due to the release of histamine, there is an increase in tissue edema, the airways become inflamed, causing coughing.

This state leads to a headache as the head pressure rises. The nose can become inflamed, it becomes filled with mucus, creating a comfortable environment for the reproduction of viruses and bacteria, resulting in an infection caused by allergies. When the condition begins to worsen, subfebrile temperature occurs (37-37.5 degrees), and thick mucus is released from the nose.

Thus, fever with allergies in adults and children happens, but it is not caused by an allergic reaction, but by a secondary disease that provoked the allergy. For example, with allergies in the nose begins to develop chronic sinusitis , which can cause an increase in temperature to fight the virus.

In what cases does fever occur with allergies?

Since lately allergic reactions have become very common, which are accompanied by fever, doctors call such a reaction an atypical allergy.

Can allergies cause fever? With an allergy of the respiratory tract, it does not rise, and if this happens, it means that inflammation develops in the body in parallel, the cause of which must be determined as quickly as possible. In this case, you need to contact a general practitioner or pediatrician, an infectious disease specialist, an allergist.

If an allergic reaction was caused medicines usually accompanied by symptoms such as itching of mucous membranes and skin, rash, severe intoxication, fever.

If subfebrile temperature persists for a long time, which is accompanied by allergic manifestations, then you need to contact an infectious disease specialist or a phthisiatrician. This condition may indicate tuberculosis intoxication or other infectious diseases which only a specialist can determine.

Sometimes an allergic reaction to plant pollen, animal hair may be accompanied by lacrimation and subfebrile temperature. If the temperature returns to normal when taking antihistamines, this means an atypical course of an allergic reaction.

In what other cases can an allergic reaction in adults cause a fever? This state occurs with the bites of various insects. In this case, a very violent reaction can develop:

Food allergies can also give temperature. In addition, it is accompanied by vomiting, diarrhea, intestinal colic, abdominal pain, itching, urticaria, headache, chills, followed by profuse sweating. In this case, you need to urgently call a doctor.

Temperature for allergies in a child

Allergic reactions in a child are more pronounced and stronger than in adults. This is due to the fact that he the immune system is not yet strong. This is also due to heredity and the fact that the mother did not breastfeed the child, ate junk food during pregnancy. In addition, a strong increase in temperature for a baby is much more dangerous than for an adult.

The temperature with allergies in a child may rise after serious signs of an allergic reaction. For example, he had a rash on his skin for a long time, after which weeping foci of inflammation appeared. If there are a lot of them, then the temperature rises, but this is the result of inflammation, not allergies. It requires fast elimination allergic symptoms in a child. In this case, no medication for fever or infection should be given.

Doctors do not advise to bring down the temperature if it is below 38 degrees. But this is only true for colds. If an adult or child develops allergy symptoms and develops a fever, urgently visit a doctor.

Allergy should be treated if the cause of its development has been clarified. First, the allergen that caused this condition is determined. Your doctor may prescribe antibiotics to clear up a bacterial infection or virus, and antihistamines to help relieve the symptoms of an allergic reaction. It is also recommended to take decongestants to clear the airways, helping to reduce inflammation in the sinus cavity and swelling in the nose.

If the temperature lasts for a very long time and is accompanied by weakness throughout the body, then you need to take antipyretics based on ibuprofen, paracetamol and analgin. Thanks to painkillers, muscle and headache are relieved in case of heat.

If an allergic reaction in an adult and a child was provoked by drugs, then it is quite dangerous to bring down the temperature with medications. You should not take hot baths and do rubbing, it is effective only for colds.

Thus, if such a question arises, whether an allergy can give a temperature or not, then it can be unequivocally answered that it appears as a reaction of the body to an infection caused by an allergic reaction. Treatment in this case should be special.

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