一、临床资料患者 ,男性 ,2 6岁 ,歼 - 7飞行员 ,飞行时间 6 80 h。 2 0 0 0年 11月 6日疗养保健入院。患者主诉从 1997年 10月份起体重持续下降 ,每年下降 2～ 3kg,有食欲不振、恶心及全身乏力等症状 ,同时伴有头昏、头痛、失眠 ,偶有腹痛、腹泻。此症状尤以飞行训练时明显 , First, the clinical data of patients, men, 26 years old, J-7 pilots, flight time 6 80 h. November 6, 2000 convalescent health admission. Patients complained that body weight continued to decline from October 1997, with an annual decrease of 2 to 3 kg. These symptoms include loss of appetite, nausea and generalized weakness, accompanied by dizziness, headache, insomnia, occasional abdominal pain and diarrhea. This symptom is particularly evident when flying training,