Sudden splitting headache may be caused by cluster headache, subarachnoid hemorrhage, intracranial infection and so on.
1. Cluster headache: this disease is autonomic headache, which can be manifested as a sudden splitting headache, and may also be accompanied by orbital pain on one side of the eye, facial flushing and other symptoms. It may be related to genetic factors, alcohol stimulation and other factors.
2. Subarachnoid hemorrhage: When subarachnoid hemorrhage occurs suddenly, it may cause sudden splitting headache, and it is considered that it may be caused by increased intracranial pressure.
3. Intracranial infection: common in encephalitis, meningitis and other diseases, due to the presence of intracranial infection, easy to cause intracranial pressure increases, resulting in damage to the cerebral nerves, which may cause a sudden headache, may also be accompanied by nausea, vomiting, fever and other symptoms.
Sudden headache should be taken seriously, go to a regular hospital as soon as possible, after the cause is clear, the doctor will guide the treatment.