blood disease, blood disorder - a disease or disorder of the blood

nonthrombocytopenic purpura - purpura resulting from a defect in the capillaries caused by bacteria or drugs

idiopathic thrombocytopenic purpura, purpura hemorrhagica, thrombocytopenic purpura, Werlhof's disease - purpura associated with a reduction in circulating blood platelets which can result from a variety of factors