Thrombocytopenia is a condition characterized by abnormally low levels of · A normal human platelet count ranges from 150,000 to 450,000 platelets per microliter ...ThrombocytopeniaFromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchMedicalconditionThrombocytopeniaOthernamesThrombocytopaenia,thrombopeniaAphotomicrographofthebloodshowingthrombocytopeniaSpecialtyHematologyCausesBonemarrownotmakingenough,bodydestroyingplatelets,spleenholdingtoomanyplatelets[1]DiagnosticmethodCompletebloodcount[1]TreatmentNone,immunosuppressants,platelettransfusion,surgicalremovalofthespleen[1]Thrombocytopeniaisaconditioncharacterizedbyabnormallylowlevelsofplatelets,alsoknownasthrombocytes,intheblood.[2]Itisthemostcommoncoagulationdisorderamongintensivecarepatientsandisseenin20%ofmedicalpatientsandathirdofsurgicalpatients.[3]Anormalhumanplateletcountrangesfrom150,000to450,000plateletspermicroliterofblood.[4]Valuesoutsidethisrangedonotnecessarilyindicatedisease.Onecommondefinitionofthrombocytopeniarequiringemergencytreatmentisaplateletcountbelow50,000permicroliter.[5]Thrombocytopeniacanbecontrastedwiththeconditionsassociatedwithanabnormallyhighlevelofplateletsintheblood:thrombocythemia(whenthecauseisunknown),andthrombocytosis(whenthecauseisknown).[6][7]Contents1Signsandsymptoms2Causes2.1Decreasedproduction2.2Increaseddestruction2.3Medication-induced2.4Othercauses3Diagnosis4Treatment4.1Platelettransfusions4.2Thromboticthrombocytopenicpurpura4.3Immunethrombocytopenicpurpura4.4Heparin-inducedthrombocytopenia4.5Congenitalamegakaryocyticthrombocytopenia4.6Humaninducedpluripotentstemcell-derivedplatelets5Neonatalthrombocytopenia6References7ExternallinksSignsandsymptoms[edit]PetechiaonthelowerlegfromthrombocytopeniaRightupperlimbwithpurpuracausedbythrombocytopeniainpersonwithsepticshockThrombocytopeniausuallyhasnosymptomsandispickeduponaroutinecompletebloodcount.Someindividualswiththrombocytopeniamayexperienceexternalbleedingsuchasnosebleeds,orbleedinggums.Somewomenmayhaveheavierorlong