患儿11岁,男性。于10天前突然剧烈头痛伴呕吐,每日呕吐多次,尤以进食后明显,无腹痛。发病后第七天出现四肢瘫痪。发病后第五天曾住当地医院,经注射青、链霉素及应用脱水利尿药无效,于第十天晨意识不清,以颅压高急症收住我院脑外科。发病以来无发烧,既往体健,无中耳炎史。查体:患儿容貌似成人,有细小黑胡须,骨骼肌肉发达,头颅无畸形,双眼球可见细小垂直眼震,双瞳孔小于正常,左瞳略大于右 Children 11 years old, male. Suddenly severe headache with vomiting 10 days ago, vomiting several times a day, especially after eating obvious, no abdominal pain. On the seventh day after the onset of limb paralysis. On the fifth day after his illness, he had lived in a local hospital and was ineffective on injecting cyan, streptomycin and dehydrated diuretics. He was unconscious on the tenth day and was admitted to our department of brain surgery with acute intracranial hypertension. Since the onset of a fever, past physical health, no history of otitis media. Physical examination: children looks like adults, a small black beard, muscular skeletal, head deformity, small vertical eye nystagmus visible, double pupil less than normal, left pupil slightly larger than the right