For more severe cases, the following are possible treatments. Corticosteroid medications may be prescribed if the condition is caused by an immune response because steroids quiet immune system activity. Blood transfusions may be used for severe cases where the person's platelet count drops to dangerous levels. The blood transfusion acts to replace lost blood with healthy blood full of platelets. And if the spleen is involved and holding on to too many platelets, then a splenectomy, which is the surgical removal of the spleen, may be performed to control the condition.