Urticaria is divided into acute urticaria, chronic urticaria, physical urticaria and other special types of urticaria, the symptoms of each type are different. 1. Acute urticaria: the onset of the disease is more acute, the patient feels itchy skin, the appearance of different sizes of wind, in a few minutes to a few hours the edema will be reduced, the wind will gradually disappear, and new wind, new and new wind, constantly occurring. 2. Chronic urticaria: Spontaneous hives and/or angioedema recurring for more than 6 weeks and at least 2 times a week, with mild systemic symptoms, more or less frequent hives, recurring, often for several months or years. 3. Physical urticaria: divided into artificial urticaria, cold urticaria, solar urticaria, pressure urticaria, heat urticaria. All manifested as edematous elevation, erythema, and windsock. It can subside by itself. 4. Special types of urticaria: cholinergic urticaria manifested as pimples after exercise and heat. Contact urticaria manifests itself in the form of red bumps and erythema after direct contact with allergens. If any of the above related symptoms occur, it is recommended to consult a doctor in time and standardize the treatment under the doctor’s guidance.