Celiac DiseasePurpura, Thrombocytopenic, IdiopathicPurpura, Thrombotic ThrombocytopenicPurpura, ThrombocytopenicPurpuraPurpura, Schoenlein-HenochAutoimmune DiseasesGlutensPlatelet CountGliadinPlasma ExchangeDiet, Gluten-FreeSplenectomyThrombocytopeniaAutoantibodiesADAM ProteinsPurpura FulminansTransglutaminasesBlood PlateletsPlatelet TransfusionDermatitis HerpetiformisReticulinHemolytic-Uremic SyndromeImmunoglobulins, IntravenousImmunoglobulin APlasmapheresisDanazolPregnancy Complications, HematologicRho(D) Immune GlobulinAntigens, Human PlateletEcchymosisDuodenumImmunoglobulin GThrombopoietinvon Willebrand FactorLupus Erythematosus, SystemicJejunumIntestinal MucosaAutoimmunityPurpura, HyperglobulinemicHLA-DQ AntigensOklahomaMegakaryocytesAnemia, Hemolytic, AutoimmuneAutoantigensBiopsyThrombopoiesisAntibodies, Monoclonal, Murine-DerivedMetalloendopeptidasesReceptors, ThrombopoietinImmunologic FactorsIntestine, SmallThrombotic MicroangiopathiesAnemia, HemolyticProlaminsAvena sativaT-LymphocytesAntibodiesChronic DiseaseAntibodies, AntinuclearAntibodies, MonoclonalPlatelet Membrane GlycoproteinsCase-Control StudiesEnzyme-Linked Immunosorbent AssaySpleenInterleukin-18 Receptor beta SubunitRecurrenceAdrenal Cortex HormonesImmunosuppressive AgentsPrednisoloneEncephalomyelitis, Autoimmune, ExperimentalHemorrhageAntigen-Antibody ComplexDiabetes Mellitus, Type 1Treatment OutcomeDisseminated Intravascular CoagulationFatal OutcomeSjogren's SyndromeIsoantibodiesHematologyDiet TherapyImmune System DiseasesPlasmaB-LymphocytesAntibody SpecificityRetrospective StudiesSplenic DiseasesLymphocyte ActivationMethylprednisoloneAcute DiseaseHLA-DR3 AntigenThrombocytosisIgA DeficiencyGenetic Predisposition to DiseaseHemoglobinuriaThyroiditis, AutoimmunePhenazopyridineAutoimmune Diseases of the Nervous SystemImmunoglobulin MNephritis