A close follow-up is advised for fear of the possibility of underlying intracranial vascular anomaly, chronic subdural hematoma or silent brain lesion.

• 但是仍应对病人说明颅内疾病(例如颅内血管异常、慢性硬脑膜下血肿块和脑部不产生神经学徵象区的病变)可能出现的症状。