Urticaria is a disease in which the skin quickly becomes itchy rash. In most cases, we are talking about blisters. Quite often, this disease develops along with angioedema.
The most frequent hives face the female.
The occurrence of this disease is associated with the intake of certain medicines, food, cosmetics, drugs, insect bites.
The clinical picture of urticaria
Acute variant of urticaria is characterized by sudden onset and severe pruritus. Marked malaise, headache, fever up to 39C. After some time the itchy areas is the development of hyperemic lesions (blisters). The compression of the capillaries and blanching of blisters due to increasing swelling. In some cases, in the centre of the swollen surface is formed bubble peeling epidermis. May cause hemorrhagic exudate. Further, the formation of pigment spots due to destruction of red blood cells.
Rash with hives is characterized by a different value. It is possible to separate the location of elements of rash or merge to form a fanciful shapes. Notes fickle nature of the rash.
The acute phase can last several days. After that developing the subacute period of urticaria. In the case of duration of disease more than 3 weeks talking about chronic variant of urticaria.
For chronic recurrent urticaria is wavy. For the disease characterized by periods of remission. When this form is particularly painful itching. It is noted brushing of the skin to the blood. Infection itches contributes to the appearance of pustules and other pathological elements.
Evidence of the existence of this condition is the detection of a blister, which is a primary morphological element. This diagnosis is confirmed by means of detection of the red dermographism.
Hives must be differentiated from the following diseases:
1. Medicinal and food toxicoderma. Data pathological conditions develop due to certain medications, or adequate food. Unlike urticaria is the polymorphism of the rash. In this case dominated by vesicular, erythematous-squamous and bullous elements.
2. Microheli syndrome of Melkersson-Rosenthal. Marked persistent and mild swelling of the lips.
3. Insect bites. You must take into account the seasonal nature of the appearance of the rash, its localization, hygienic situation in the family or institution.
The choice of therapy affects the form of urticaria. The development of food Allergy involves the elimination from the diet of allergen and all its containing products.
When the drug etiology of urticaria is a life prohibition of the use of drugs that caused the Allergy.
Is the purpose of antihistamines. We are talking about blockers of histamine receptors (tavegil, zyrtec, astemizole).
The use of corticosteroids is recommended in the case of developing laryngeal edema, the combination of urticaria with other serious diseases (bronchial asthma, anaphylactic shock) and the ineffectiveness of treatment antihistamines.
The purpose of symptomatic therapy is the elimination of itching and swelling. Possible tracheostomy, intravenous epinephrine hydrochloride, etc.