Suddenly the back of the head hurts and cramps. What's going on?

Suddenly showing pain in the back of the head and cramps, you need to go to the hospital for a head CT examination, which is likely to be caused by cerebellar hemorrhage. For sudden headache, you should rule out the possibility of acute cerebrovascular disease. If the patient is not cerebellar hemorrhage, it may be caused by neurovascular headache, which may be caused by excessive fatigue, or reduced sleep time, excessive psychological pressure, and neurovascular headache, which can relax the mood. Oral medicine treatment, can be oral compound Yangjiao particles, can also be oral Zhengtian pills, generally oral two courses of treatment will be better.