Thrombocytopenia
Underproduction
Marrow failure
Myelodysplasia
Aplastic anemia
Vitamin deficiencies
Marrow infiltration
Tumors
Leukemias
Lymphomas
Fibrosis
Granulomatous diseases
Marrow toxins
Drugs
Radiation
Infxn
EtOH
Peripheral destruction
Nonimmune
DIC
TTP
Immune
Drugs
a/w HIV
a/w other auotimmune
ITP (Idiopathic)
Splenic sequestration
Liver dz w/ portal HTN