Patients with urticaria experience itchy skin at the onset of the disease. Urticaria is caused by temporary dilatation of small blood vessels in the skin and mucous membranes and exudation of the contents of the vessels, resulting in the appearance of erythematous spots or wind bumps on the skin, accompanied by itching of the skin. The erythema and wheals appear repeatedly, and the time of each appearance usually does not exceed 24 hours, and the skin will return to normal after the erythema and wheals subside. The causes of urticaria are complex, and the key to treating urticaria is to avoid contact with the triggering factors, so actively searching for the cause is the key to treating urticaria. When patients have discomfort and itching symptoms, they can be treated with antihistamine. If the condition is serious, you need to go to a regular hospital as soon as possible for further rational standardized treatment.