Idiopathic thrombocytopenic purpura (ITP) is a condition which creates a short supply of blood cells called platelets. This condition is also acknowledged as immune thrombocytopenic purpura or immune-mediated thrombocytopenic purpura. Since the advent of platelet transfusions purpura (bruises) are no longer a prominent component of the disease though serious bleeding may occur.  If the platelet count is below 20 000 ITP patients can experience bruising petechiae nosebleeds and bleeding gums. The cause of the illness is an immune system reaction against normal platelets.