Purpura can be cured. It is a kind of vasculitis of capillaries and small blood vessels, which mainly occurs in children and adolescents and is related to respiratory tract infection or food and drug allergy. In the treatment, systemic treatment and local treatment are available. If you have a simple purpura, you can use antihistamines, such as paracetamol and cetirizine, or drugs that reduce vascular permeability, such as vitamin C, rutin and calcium. If you have an infection, you should use some antibiotics, and if you have a serious condition with systemic symptoms, you can use some corticosteroid preparations, such as prednisone, intravenous hydrocortisone, and if your condition persists, use some immunosuppressants. Symptomatic treatment includes antispasmodics such as 654-2 for abdominal pain, diuretics for edema, and high-dose glucocorticoids for brain disease. The main topical treatment is to use some topical drugs to enhance blood circulation and promote bruising, such as 10% camphor cream or 10% ichthyolite ointment.