患男，19岁。因腹痛、腹泻诊断为急性肠炎。静脉滴注乳酸环丙沙星注射液100ml，bid（上海富民药业有限公司，961105）。首次用药，以每分钟25滴速度输入约50ml时，病人出现颈部发紧、两眼发呆，约lmin后，又伴随口角痉挛性抽动、言语不利。检查：神志清、无冷热表现，也未查出 Male, 19 years old. Due to abdominal pain, diarrhea diagnosed as acute enteritis. Intravenous infusion of ciprofloxacin lactate injection 100ml, bid (Shanghai Fumin Pharmaceutical Co., Ltd., 961105). For the first time, at a rate of 25 drops per minute, about 50 ml was applied. The patient developed a stiff neck and his eyes were in a daze. After about 1 min, he was accompanied by spasmodic twitching of the mouth and the speech was detrimental. Check: Consciousness, no hot and cold performance, nor detected