Idiopathic Thrombocytopenia Purpura (ITP) 
(En español)
Also known as: Immune Thrombocytopenic Purpura
An autoimmune disorder in which the immune system destroys platelets. The destruction of platelets leads to abnormal blood clotting and easy or excessive bruising and bleeding. The exact cause of idiopathic thrombocytopenia purpura is unknown; however, the disorder may develop with a viral infection, including HIV.
See Related Term(s): Platelet