Purpura, Thrombocytopenic, IdiopathicPurpura, Thrombotic ThrombocytopenicPurpura, ThrombocytopenicPurpuraPurpura, Schoenlein-HenochPlatelet CountPlasma ExchangeSplenectomyThrombocytopeniaADAM ProteinsPurpura FulminansBlood PlateletsPlatelet TransfusionHemolytic-Uremic SyndromeImmunoglobulins, IntravenousDanazolPlasmapheresisPregnancy Complications, HematologicRho(D) Immune GlobulinAntigens, Human PlateletEcchymosisThrombopoietinvon Willebrand FactorAutoantibodiesPurpura, HyperglobulinemicOklahomaMegakaryocytesThrombopoiesisMetalloendopeptidasesReceptors, ThrombopoietinAnemia, Hemolytic, AutoimmuneAutoimmune DiseasesThrombotic MicroangiopathiesAnemia, HemolyticImmunoglobulin GAntibodies, Monoclonal, Murine-DerivedPlatelet Membrane GlycoproteinsImmunologic FactorsHemorrhageAdrenal Cortex HormonesDisseminated Intravascular CoagulationIsoantibodiesChronic DiseaseHematologyPlasmaPrednisoloneRecurrenceThrombocytosisFatal OutcomeHemoglobinuriaPhenazopyridineMethylprednisoloneBlood TransfusionPlatelet Glycoprotein GPIb-IX ComplexTuberculosis, SplenicPlatelet AggregationAcute DiseaseAntibodies, MonoclonalTreatment OutcomeGingival HemorrhageEpistaxisNephritisgamma-GlobulinsAntigen-Antibody ComplexBleeding TimePancytopeniaLupus Erythematosus, SystemicPrednisoneRemission InductionHELLP SyndromeHematologic DiseasesVasculitis, Leukocytoclastic, CutaneousPlatelet Glycoprotein GPIIb-IIIa ComplexReceptors, FcLeg DermatosesSteroidsSpleenImmunosuppressive AgentsSplenic DiseasesOxyquinolineAntibody SpecificityRetrospective StudiesImmune System DiseasesBlood Cell CountHydrazinesStaphylococcal Protein AQuinidineIntegrin beta3Antigens, CD20Antibodies, AnticardiolipinComplement C3Platelet Aggregation InhibitorsDipyridamoleFollow-Up StudiesExchange Transfusion, Whole BloodAntiphospholipid SyndromeBlood Component TransfusionHemorrhagic DisordersTime FactorsImmunoglobulin Fab Fragments