Which of the following Anti-TB drug can cause "Steven Johnson Syndrome"?: (A) PAS, (B) Thioacetazone, (C) Ethionamide, (D) Isoniazid
Answer is B. Thioacetazone is a bacteriostatic drug which can lead to Steven Johnson Syndrome, hypersensitivity and bone marrow suppression. It should not be used in cases of TB with HIV coinfection.