患者,男性,21岁。因患牙周炎给予甲硝唑(天津市力生制药厂,批号870615)400mg,tid。患者于服药第2d始感吃东西无味,且逐渐加重,口淡如水。检查;见舌苔增厚,原患处尚有轻度肿胀,余未见异常;给患者分别进食酸、甜食物,未能分辨。为弄清是否药物所致,令其停药,改用其它药物治疗。停药后患者味觉逐渐恢复,能辨别各种不同味道;重新给 Patient, male, 21 years old. Due to periodontitis given metronidazole (Tianjin Lisheng Pharmaceutical Factory, batch number 870615) 400mg, tid. Patients in the first 2d medication to eat something tasteless, and gradually increased, drooling water. Check; see the thickening of the tongue, the original affected area is still mild swelling, I no exception; to patients were fed sour, sweet food, failed to distinguish. In order to find out whether the drug caused it to discontinue, switch to other drug treatment. After stopping the patient’s taste gradually restored, can identify a variety of different tastes; give again