Recurrent hives

Urticaria is a localized edematous reaction caused by the dilation and increased permeability of small blood vessels in the skin and mucous membranes. People with urticaria will show wheals and rashes on their skin, accompanied by itching, and then in 24 It subsides within hours, and a new rash or wheal will occur soon, and the course of the disease can last for several days or months. Because urticaria occurs under the stimulation of drugs, food, pollen, infection, sunlight, spirit, genetics and other factors, if urticaria cannot find a clear cause, it will occur repeatedly. In this case, the cause should be found and removed. At the same time, antihistamines should be taken for treatment.