How does urticaria relieve itching?

Urticaria commonly known as "rubella", is the skin mucosa due to temporary vascular permeability increase and the occurrence of localized edema. Urticaria treatment should first be as far as possible to identify suspicious pathogenic factors, and timely removal, the condition and itching feel lighter patients can be external calamine lotion, oral antihistamine treatment, an antihistamine ineffective, can be 2~3 kinds of combination or alternate use. Urticaria patients with acute onset, severe illness such as gastrointestinal symptoms or respiratory obstruction symptoms such as dyspnea should be promptly referred to the emergency department of the local hospital.