The urticaria (allergic) may occur in people of any age as a transient skin rash that is characterized by erythematous and edematous plaques. It is a skin reaction to various causes. Divided into acute (lasting less than 6 weeks) and chronic (longer than 6 weeks).
This is therefore a conceit of the skin (a wheal), surrounded by a red halo. Urticaria is therefore characterized by the appearance usually multi – wheal, whose shape is round, oval or irregular and often varies within a few minutes to result in strange geometric shapes.
The size of hives vary from a few millimeters to a few centimeters. It can occur anywhere on the body from the scalp to toe. Most cases are idiopathic. The lesions last less than 24 hours and is not associated with any other systemic disease. Other symptoms include pruritis (itching), burning or pain. Often accompanied 40% of angioedema (swelling of the mucous) -cheili – eyelids -Language -laryngas. In each case the patient should be addressed directly to dermatologists for early treatment.
Causes of urticaria
Implicated immunoassays (allergic) or non-immunologic mechanisms. The most dramatic form urticaria, acute allergic urticaria, due to the mobilization of an allergic reaction by the immunoglobulin IgE. Most of the patients are predisposed individuals with atopic (allergic). Regarding chronic urticaria, causes in most cases are not detected. However, the above physical factors (friction, cold, sunshine, etc.) may be the trigger for chronic urticaria.
As a primary treatment is recommended to avoid precipitating causes. Ie all those factors mentioned above as causes of urticaria. The use of antihistamines (H1 and H2 blockers) directly assist the general image of the patient. The indication for the administration of cortisone in some cases considered appropriate by the treating physician. A biopsy can help us to exclude cases of pruritic vasculitis. Laboratory testing be done when deemed necessary and expedient can “unravel the mystery.” Finally temper and patient reassurance helps, as a good condition.
Also the last time is used by subcutaneous injection Xolair (300mg) 1 time per month for cases which do not have the expected result using antihistamines.
When will appear the first results
The first results appear immediately from the first day after administration of specific products.