An allergic reaction of the body to
Varieties of allergies
Allergen from the environment may enter the human body naturally three ways:
- During the food and drink — food allergy.
- With direct skin contact — contact allergy (eg allergic to animal hair or washing powder).
- In the process of breathing — breathing or respiratory allergy.
In cold weather or when swimming in cold water may develop a so-called cold urticaria.
However, clear weather is not all happy. The sun's rays can trigger the so-called photodermatitis (allergy the sun). The reason for the occurrence of photodermatitis can be as sunlight, and, for example, the solarium.
Allergens may not only come from outside (exogenous allergen), but formed in the body (endogenous origin allergens).
Most allergic skin appears as urticaria —
What's going on?
Term "Hives" indicate an allergic reaction that manifests itself in the form of itchy blisters on the skin. These blisters are very similar to those that appear in the sting. Hence the title of this form of allergy.
Hives can be acute or chronic. For acute urticaria is characterized by the sudden appearance of abundant rash, accompanied by severe itching. Blisters appear immediately after exposure to an allergen, and through
If the rash hives regularly (paroxysmal) appear for 3 months or more, it is called chronic. It is characterized by less abundant than in the acute form, the rash. Flows for a long time. If the cause of hives can not be established, it is an idiopathic urticaria.
Allergic reaction, manifested in the form of swelling of skin and mucous membranes, is called angioedema, or giant urticaria. In this case, may be affected by the lips, cheeks, eyelids, throat, or vagina. Edema accompanied by pain, burning, at least — itching.
The most dangerous angioedema of the larynx — thus there is choking, similar to the attack of bronchial asthma. However, in contrast to asthma, first appears hoarseness, barking cough, shortness of breath and then with noisy breathing. The complexion becomes bluish tint, then quickly fades. This condition is a medical emergency.
Redness of the skin, itching, dryness and flaking of the skin, resulting in a child, as a rule, evidence of the manifestation atopic dermatitis. The danger of this disease consists in the fact that it can grow into the respiratory allergy, particularly in asthma. In adulthood, atopic dermatitis can be transformed into atopic dermatitis andeczema,pollinosis (hay fever), allergic asthma, etc.
Diagnosis and treatment
It should be remembered that these cutaneous manifestations may be caused not only by an allergic reaction of the body. The cause of rash may also become infectious or systemic (autoimmune) disease. Therefore it is so important to address in time
As with any other manifestations of allergic reactions, for effective treatment, you must first install an allergen, ie factor causing this reaction. Therefore necessary to conduct allergy tests, tests of elimination, cold and heat tests. To obtain a more complete picture of the disease can conduct a comprehensive survey of allergy and immunology.
Blood purification in the treatment of severe allergies plasmapheresis is used, the purpose of the general health of the body may prescribe a course of physiotherapy.