The common symptom of acute urticaria is migratory, well-defined skin erythema with some degree of itching. Medications can be oral antihistamines such as loratadine, ebastine, etc., when the symptoms are severe, the systemic application of hormonal drugs such as prednisone. Acute urticaria is an allergic reaction, usually triggered by mosquito bites or contact with certain drugs and foods. It is characterized by well-demarcated, migratory erythema of the skin, accompanied by a certain degree of itching. Medications include oral antihistamines, such as loratadine and ebastine. If the symptoms are more serious, increase systemic hormone medication as prescribed by the doctor, such as oral prednisone, which can control acute episodes of severe cases, but can not be used for a long period of time, the specific medication program is recommended to follow the instructions of the doctor. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.