A 32-year-old male patient was diagnosed as having pulmonary tuberculosis and put on category II antitubercular regime since he had a history of antituberculosis treatment 10 years ago. Within 3 weeks, patient presented with ulcers in mouth, and blood picture confirmed thrombocytopenia. Rifampicin-induced thrombocytopenia was suspected and antitubercular treatment stopped. Patient improved and was re-exposed to the drugs one by one. After re-exposure with pyrazinamide, the platelet count decreased drastically and oral mucosal ecchymoses reappeared, while with rifampicin, thrombocytopenia was accompanied with petechiae on legs and forearms. Isoniazid, ethambutol, and streptomycin were continued.

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A 43 year old male patient, known case of multidrug resistant tuberculosis, was prescribed antitubercular drugs: kanamycin, levofloxacin, ethionamide, terizidone, Para-Aminosalicylate Sodium (PAS), pyrazinamide and pyridoxine. After 4 months of treatment, the patient developed a lump in the right breast which was approximately around 3 × 3 cm in size, tender on palpation, and not fixed to the underlying tissues. Ultrasonography (USG) revealed a hypoechoic mass of size 2.5 × 0.92 × 2.6 cm in the right breast region behind the nipple without any infiltration to the deeper structures. Gynecomastia due to ethionamide was suspected and the patient was advised anti-inflammatory drugs for 5 days without any change in drug therapy. The pain subsided; however, the nodule remained. Treatment was continued without any change till the patient stopped using the drugs on his own and without doctor's consent. Within a week of stopping of treatment the nodule also disappeared.

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