How is purpura treated?

Purpura is characterized by surface skin changes, many petechiae or ecchymosis, pressure does not fade, no pain. Generally speaking, if it is idiopathic thrombocytopenia purpura, can use immunosuppressants for treatment. If ineffective can do splenectomy. If it is allergic purpura, can be given adrenocortical hormone, vitamin C and other drugs, if necessary, plasma exchange.