低颅压综合征是指颅内压降低(脑脊液压力70mmH2O)而以头痛为突出症状的临床综合征。头痛多为体位性,在临床上较为常见,而表现为血性脑脊液(CSF)改变的并非少见,易误诊为蛛网膜下腔出血(SAH)。近3年我们收治的26例低颅压综合征中有7例CSF呈血性改变。现就7例血性CSF改变的低颅 Low intracranial pressure syndrome is a clinical syndrome characterized by a reduction in intracranial pressure (CSF pressure 70 mmH2O) and headache as a prominent symptom. Headache is mostly orthopedic, more common in clinical practice, and the performance of bloody cerebrospinal fluid (CSF) changes is not uncommon, easily misdiagnosed as subarachnoid hemorrhage (SAH). In the past 3 years, we treated 26 cases of intracranial hypotension syndrome in 7 cases of CSF showed bloody changes. Now 7 cases of bloody CSF changes in the low cranial