Urticaria - a term that brings together under a whole group of diseases of different nature, but have similar clinical symptoms: skin elements on the lump type, resembling a burn from nettles.
Urticaria - quite a common disease. Accurate statistics on its occurrence there, but a number of national studies have shown that at least once in her life, she appears in 31% of the population.
Urticaria - a classic polietiologic disease. This means that the causes of the same symptoms may be set.
One of the most common types of the disease - allergic urticaria, which is based on immediate-type hypersensitivity. This mechanism is the basis of many allergic reactions. It is characterized by the rapid development of symptoms after intake of the allergen. This type of allergy is characteristic of the hives after insect bites or related to the use of food.
The main symptom of urticaria - the appearance of blisters on the skin. Externally blister - a protruding skin, resembling a trace of sting or burn left by nettles. Skin element - accompanied by itching. The skin around the blister can be red. Items can merge, acquire gigantic proportions. The most common lesions are symmetrical.