What severe blood disorder is a potential side effect of Chloramphenicol?

• A. Aplastic anemia
• B. Thrombocytopenia
• C. Leukopenia
• D. Eosinophilia

Answer: (A)

Chloramphenicol is an antibiotic that can lead to several serious side effects, one of which is aplastic anemia. This condition arises when the bone marrow fails to produce sufficient blood cells, leading to a deficiency of all types of blood cells (red blood cells, white blood cells, and platelets). Aplastic anemia is particularly concerning because it can be life-threatening and may result from the bone marrow's exposure to certain drugs, including Chloramphenicol.

The mechanism behind chloramphenicol's association with aplastic anemia involves the drug's ability to cause immune-mediated destruction of hematopoietic stem cells in the bone marrow. This process can be idiosyncratic and is not fully understood, but it highlights the importance of monitoring patients on chloramphenicol for signs and symptoms indicative of blood dyscrasias.

While chloramphenicol may also lead to other adverse effects that can affect blood values, such as thrombocytopenia (a reduction in platelets) and leukopenia (a reduction in white blood cells), these conditions are generally less severe when compared to the risk of developing aplastic anemia. Eosinophilia, an increase in eosinophils often associated with allergic reactions or parasitic infections,