Severe headache and nausea may be related to subarachnoid hemorrhage, migraine, hypertension and so on.
1. Subarachnoid hemorrhage: mostly due to the rupture of intracranial aneurysm, there can be a sudden and unusually severe head swelling or bursting pain, vomiting, and in severe cases, there can be transient impaired consciousness or irritability, delirium, hallucinations and other psychiatric symptoms, which belongs to the more critical diseases, and it is life-threatening if it cannot be treated in time.
2. Migraine: mainly caused by intracranial and extracranial vasoconstriction and diastolic dysfunction, which is characterized by episodic, mostly lateral, moderate to severe, throbbing headache. It usually lasts for 4~72 hours and can be accompanied by nausea and vomiting, and can be aggravated by sound and light stimulation or daily activities. The headache can be relieved after quiet rest, sleep or taking pain medication, but it often recurs.
3. Hypertensive encephalopathy: When blood pressure rises suddenly, causing hypertensive encephalopathy, the pressure of blood on the walls of blood vessels increases, local cerebral vasospasm, severe headache and nausea may occur.
When severe headache and nausea occur, you should go to the hospital in time to improve the relevant examination to identify the cause of the disease, and actively comply with the doctor’s instructions for treatment.