原发性颅内低压(Spontaneous intracranial hy-potension,SIH)是一组病因不清、以体位性头痛为主要症状、侧卧位腰穿CSF压力小于60mmH_2O的综合征,其独特的临床表现近来逐渐引起人们的注意,但有许多问题至今还未阐明,并由于未能认识而误诊,现将我院2001年4月～2002年2月收治的3例SIH报道如下。 Spontaneous intracranial hy-potension (SIH) is a group of patients with unclear etiology, postural headache as the main symptom, lateral lumbar puncture CSF pressure less than 60mmH_2O syndrome, the unique clinical manifestations of recent gradual Aroused people’s attention, but many problems have not yet been elucidated and misdiagnosed because they failed to understand. Now, three cases of SIH treated in our hospital from April 2001 to February 2002 are reported as follows.