Why does urticaria break out repeatedly

Urticaria is an allergic reaction to contact with pollen, dust mites, dust, cosmetics, skin care products, mosquito bites, bacterial infections, viral infections in the air. A lot of allergens will be caused, if always contact allergens, if not from allergens, will repeat, when necessary, you can go to the hospital dermatology department to see a doctor, you can draw blood test allergens, find allergens, from allergens, no longer contact allergens will not repeat. If there is itching discomfort, you can use calamine lotion externally, Bute oral cetirizine, compound glycyrrhizin, skin itching granules, to prevent irritation drink, these things do not eat diet, to eat more fresh fruits, fresh vegetables, vitamin supplements, improve immunity, to drink more water, adhere to treatment will slowly recover