Allergic purpura is a common allergic vascular inflammatory disease in dermatology that invades the skin, and small capillary arteries of other organs. Allergic purpura is a metaplastic disease that causes increased permeability of the capillaries, which can lead to kidney damage in severe cases. The main clinical drugs used to treat allergic purpura are as follows: 1. antihistamine drug therapy, such as levocetirizine capsules, loratadine tablets, fexofenadine hydrochloride tablets, vitamin C, etc. 2. vascular protective drug therapy, such as rutin capsules, etc. 3. glucocorticoid drug therapy, such as prednisone acetate tablets, dexamethasone, methylprednisolone tablets, etc. 4. topical drugs can If you have a skin infection, you need to take oral antibiotics and use topical antibiotic creams.