患者男,1岁,以“频繁性呕吐伴行走不稳1月余”为主诉入院。1个月前无明显诱因出现频繁性呕吐,具体次数不详,呕吐物为进食奶粉,量中等,呕吐后患者哭闹减轻,发病后患者精神差,饮食一般,曾多次就诊外院,以“胃肠疾病”诊治(具体不详),上述症状反复发作。后于外院行头颅 Male patient, 1 year old, with “frequent vomiting with walking unstable more than 1 month” mainly admitted to the hospital. 1 month ago, there was no obvious incentive for frequent vomiting, the specific number of unknown vomit for the consumption of milk powder, the amount of moderate vomiting patients to alleviate the cry after the onset of poor patient spirit, diet in general, has repeatedly seen outside the hospital to Gastrointestinal disease "diagnosis and treatment (specific unknown), the above symptoms recurrent. After the head outside the hospital line