Itchy skin, a scratch on the package

The symptoms are more common in urticaria, due to the expansion of small blood vessels and permeability of the skin and mucous membrane and show a localized edema reaction, normal in 2 to 24 hours to resolve, but repeated occurrence of new rash, and can delay several days to months. The cause of this disease is complex, most patients can not find the exact cause, especially chronic urticaria, common causes include food, inhalants, infections, drugs, physical and chemical factors, mental stress, endocrine changes, genetic factors. Treatment of urticaria: If itching is obvious, oral antihistamines, high-dose vitamin C, calcium gluconate can assist anti-allergic treatment, if allergic reaction is serious, glucocorticoid or adrenaline can be given.