Allergic vasculitis generally refers to hypersensitivity vasculitis, mostly caused by drug allergy, chemical substances, etc. Commonly used drugs include glucocorticosteroids, sulfone drugs, non-steroidal anti-inflammatory drugs and so on. 1. Glucocorticosteroids: in mild cases, prednisone tablets can be used under the guidance of a doctor. If the condition is more serious, the dosage can be increased under the guidance of a doctor, and the dosage can be slowly reduced after the symptoms have improved. 2. Sulfone drugs: Sulfone drugs are generally related to the stabilization of lysosomal membranes and other effects, patients generally use aminophenylsulfone to control the condition. 3. Immunosuppressants: Immunosuppressants such as cyclophosphamide and azathioprine can be used to alleviate the condition. Specific medication should be under the guidance of the doctor, according to their own situation, patients should not use, stop or change medication without authorization.