A 57-year-old man presents to the emergency department (ED) with fever, night sweats, and a productive cough with occasional hemoptysis. He is started empirically on several medications for his underlying disease. At follow-up several months later, he reports difficulty reading the paper in the morning and has been found to wear unusual color combinations at work. Which of the following is the most likely cause of this patient’s new symptoms?
(A) Ethambutol toxicity
(B) Isoniazid toxicity
© Pyrazinamide toxicity
(D) Rifampin toxicity
(E) Tuberculous eye infection
Ans:(A) Ethambutol toxicity