Williams B
Arch Neurol. 1980 Apr;37(4):226-30. doi: 10.1001/archneur.1980.00500530064010.
Two women had severe headache that would come on a few seconds after straining or coughing and would last for about a minute. Results of pressure studies showed that a difference in pressure between the ventricles and the lumbar subarachnoid space developed after coughing or straining. Decompression of the cerebellar tonsils relieved the symptoms and eliminated the craniospinal pressure dissociation in both cases.
两名女性出现严重头痛，在用力或咳嗽后几秒钟发作，持续约一分钟。压力研究结果显示，咳嗽或用力后脑室与腰段蛛网膜下腔之间出现压力差。小脑扁桃体减压缓解了症状，并消除了两例患者的颅脊压力分离。
