When you wake up with a sudden headache while sleeping, be sure to take your blood pressure first and observe whether it is caused by elevated blood pressure. If it is a simple headache and elevated blood pressure, the headache can be relieved by taking long-acting oral stabilizing antihypertensive medication for the symptom, and the blood pressure will drop smoothly. However, if the headache is accompanied by jet-like nausea and vomiting, along with symptoms such as crookedness of the mouth, unfavorable limb movement or sensory numbness of the limbs and clumsy speech, the possibility of acute cerebrovascular disease must be considered, and the patient needs to immediately consult a hospital for a head CT examination. If cerebrovascular disease is clearly excluded, symptomatic oral medication can be administered. In addition, this kind of headache also considers migraine and neurological headache attacks. If it is not accompanied by limb and language problems, it is considered to be a simple headache and can be relieved by symptomatic oral pain medication and just observe the changes in the condition.