例1,女,18岁.因兴奋、幻听、言语杂乱、拒食、玩弄大便3月入院。诊断为精神分裂样精神病.投以氯丙嗪,日量300mg.因出现持续性心动过速于3日后停用。改氟哌啶醇口服,日量12mg。次日,出现急性肌张力障碍,经对症处理后恢复。此后,缓慢递增药量至每日32mg,精神症状渐消失,自知力恢复。6周后,药物渐减量为每日16mg. Example 1, female, 18 years old. Due to excitement, auditory hallucinations, speech disorder, antifeedant, playing stool in March admission. Diagnosed as schizophreniform psychosis cast with chlorpromazine, the amount of 300mg due to the emergence of persistent tachycardia discontinued after 3 days. Oral haloperidol change, the amount of 12mg. The next day, acute dystonia appeared and recovered after symptomatic treatment. Since then, slowly increase the dose to 32mg daily, mental symptoms gradually disappear, self-knowledge recovery. Six weeks later, the drug was titrated to 16 mg daily.