Symptoms of urticaria are important characteristic is swollen, red skin that each position เป็นอยู่ไม่ over 24 hours will collapse, but to be born Other areas of the skin are 2 species.1. Acute urticaria, rash, urticaria occurs rapidly, some severe urticaria most lost in this kind 6 week is different. From chronic urticaria is the symptoms of the disease just happened. The patient can indicate the relationship of cholinergic urticaria with the cause of the disease, infectious diseases, such as bacteria, virus, is a cause of acute urticaria frequently. Urticaria symptoms may precede cough, sore throat, diarrhea caused by the virus. Bacteria or were born after such symptoms, but usually within one week after the symptoms 2 wind poisons may become chronic urticaria. Different and another of those who have acute urticaria. Often associated with chemicals that cause the obvious, such as medicine or food, the patient eating, which the patient often has the chemical in the 2 weeks before the rash.2. Chronic urticaria is a rash, urticaria occurs slowly, mild rash will rise and collapse, as it is too long 6 week, then disappear. The patient has symptoms of urticaria recurring for months or years.
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