Like mosquito bites, the bag is itchy. What's going on?

Like mosquito bites bag very itchy, this situation should be suffering from urticaria. The incidence of this disease and food, drugs, infection, cold and hot, sunlight, pollen, friction and other factors related to allergies, perhaps genetic, mental, endocrine and other factors. Treatment of urticaria, should first remove suspected allergens, in addition to oral chlorpheniramine and other antihistamine drug treatment. Cortisol can be used for severe cases. Boric acid should be used for exudation. Vitamin C should be used for adjuvant treatment. Calamine lotion can be applied externally for relieving itching.