The primary manifestations are thrombocytopenia and megakaryocytopenia, or low numbers of platelets and megakaryocytes. There is an absence of megakaryocytes in the bone marrow with no associated physical abnormalities.
Congenital amegakaryocytic thrombocytopenia
X linked thrombocytopenia
Drug-induced thrombocytopenic purpura
Gray platelet syndrome
Quebec platelet disorder
Immune thrombocytopenic purpura
Essential thrombocythemia
Harris platelet syndrome