Drug-induced cytopenia

**Definition:** Drug-induced cytopenia is a relatively common immune-mediated cytopenia and the target cells include erythrocytes, leukocytes, platelets and hematopoietic precursor cells in the marrow. The most frequent condition is the drug-induced immune thrombocytopenia and the most frequent implicated drugs are penicillin and structurally related drugs, quinine, quinidine, sulfonamide antibiotics, non-steroidal anti-inflammatory drugs and anticonvulsants.