It is mostly caused by poor lifestyle habits, due to frequent late nights, prolonged exertion, smoking, alcohol abuse, or being in an air-conditioned room frequently, causing pain in the half of the scalp upon waking. However, for some people, neurovascular lesions, including those caused by cerebral neuropathy and cerebral infarction, cannot be ruled out, but such patients are mostly accompanied by other symptoms, and prompt medical attention is recommended if related diseases are suspected.