Heighten of B skull internal pressure: Tumor of thrombus of cerebral oedema, sinus, water on the brain, brain or cerebral cysticercus are oppressive jam loop of influence cerebrospinal fluid.

• b 颅内压增高：脑水肿、静脉窦血栓、脑积水、脑肿瘤或脑囊虫压迫堵塞影响脑脊液循环等。