thrombocytopenic purpura n purpura that is characterized by bleeding into the skin with the production of petechiae or ecchymoses and by hemorrhages into mucous membranes and that is associated with a reduction in circulating blood platelets and prolonged bleeding time <idiopathic thrombocytopenic purpura> called also purpura hemorrhagica, Werlhof's disease
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thrombopenic purpura 1. any form of purpura in which the platelet count is decreased; it may be either primary (idiopathic) or secondary. See also thrombotic thrombocytopenic p. 2. primary thrombocytopenic p.Medical dictionary. 2011.