Newly Diagnosed Pulmonary Tuberculosis in Medicine / Internal Medicine — 40yo Man | Infectious Diseases | SMLE Q#12047
SMLE Question #12047
Medicine / Internal Medicine
Infectious Diseases
Objective: OBJ-349
Last updated: February 2026
A 40-year-old man with newly diagnosed pulmonary tuberculosis has taken isoniazid, rifampicin, pyrazinamide, and ethambutol daily for 3 months. Two weeks ago, he stopped his prescribed supplement. For 7 days, he has progressive pins-and-needles and numbness in a stocking–glove distribution. Examination shows reduced pinprick and light-touch sensation in both feet to mid-calf with normal strength and reflexes. Which antituberculous drug is most likely responsible for these symptoms?
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