Purpura, Thrombocytopenic, IdiopathicPurpura, ThrombocytopenicPurpura, Thrombotic ThrombocytopenicSplenectomyPlatelet CountDanazolImmunoglobulins, IntravenousEcchymosisBlood PlateletsPlasma ExchangePurpuraPlatelet TransfusionThrombocytopeniaPregnancy Complications, HematologicRho(D) Immune GlobulinPurpura, Schoenlein-HenochAntigens, Human PlateletAutoantibodiesADAM ProteinsThrombopoietinAnemia, Hemolytic, AutoimmunePrednisolonegamma-GlobulinsImmunologic FactorsMegakaryocytesAutoimmune DiseasesImmunoglobulin GSplenic DiseasesChronic DiseasePlatelet Membrane GlycoproteinsAntibodies, Monoclonal, Murine-DerivedAdrenal Cortex HormonesMethylprednisoloneHemolytic-Uremic SyndromePlatelet Glycoprotein GPIb-IX ComplexHemorrhagePlasmapheresisvon Willebrand FactorAntigens, CD20Hematologic DiseasesSteroidsTreatment OutcomeSpleenRecurrenceOklahomaAntibodies, MonoclonalThrombotic MicroangiopathiesAntibody SpecificityAcute DiseaseImmunoglobulinsImmunosuppressive AgentsRetrospective StudiesMetalloendopeptidasesPurpura FulminansLaparoscopyImmunoglobulin MAnemia, HemolyticHelicobacter pyloriThrombopoiesisTime FactorsPrognosisReceptors, ThrombopoietinIsoantibodiesHemoglobinuriaPlasmaHematologyPhenazopyridine