患者，女，15岁，住院号97713。因反复发作性呕吐8年住院。8年前出现不明原因的剧烈恶心、呕吐，非喷射状。先是胃内容物，后是少量胃液、胆汁。无眩晕、头痛、意识障碍；无畏寒发热、腹痛、腹泻。反复发作，每3～4月一次，24小时内自行缓解。入院前半年发作频繁，最短3天发作 Patient, female, 15 years old, hospital number 97713. Due to recurrent vomiting for 8 years in hospital. Unexpected 8 years ago, severe nausea, vomiting, non-jet-like. First stomach contents, after a small amount of gastric juice, bile. No vertigo, headache, disturbance of consciousness; no chills fever, abdominal pain, diarrhea. Recurrent, once every 3 to 4 months, 24 hours to ease themselves. Frequent seizures in the first half of admission, the shortest three days attack