Purpura, Thrombotic ThrombocytopenicPurpura, Thrombocytopenic, IdiopathicPlasma ExchangePurpura, ThrombocytopenicADAM ProteinsHemolytic-Uremic SyndromePurpuraPurpura, Schoenlein-HenochPlasmapheresisvon Willebrand FactorThrombotic MicroangiopathiesOklahomaPlatelet CountMetalloendopeptidasesSplenectomyPregnancy Complications, HematologicThrombocytopeniaAutoantibodiesAnemia, HemolyticPlasmaBlood PlateletsAntibodies, Monoclonal, Murine-DerivedRecurrencePurpura FulminansHELLP SyndromeDisseminated Intravascular CoagulationFatal OutcomePancytopeniaPlatelet TransfusionPlatelet AggregationImmunoglobulin GAdrenal Cortex HormonesImmunologic FactorsImmunoglobulins, IntravenousDanazolDipyridamoleRho(D) Immune GlobulinTiclopidineAntigens, Human PlateletEcchymosisLupus Erythematosus, SystemicBlood TransfusionPlatelet Aggregation InhibitorsThrombopoietinAntibodies, MonoclonalRemission InductionPurpura, HyperglobulinemicTreatment OutcomeMegakaryocytes