Cold sweat on the forehead and headache may be a more intense headache, and intense headache can cause patients to sweat. In general, severe headache may be caused by organic lesions, including cranial tumors, cerebrovascular diseases including cerebral hemorrhage and subarachnoid hemorrhage.1 Patients with subarachnoid hemorrhage may have a sudden headache, which may be severe and may appear to be explosive, and cranial CT examination may clarify the diagnosis. Patients with cerebral hemorrhage can generally have headache accompanied by somatic symptoms and signs, while nausea and vomiting can occur.2. Patients with cerebral hemorrhage and subarachnoid hemorrhage should be promptly hospitalized for comprehensive treatment if the diagnosis is clear.3. In addition, it may also be caused by primary headache disorders, common disorders include cluster headache, cluster headache usually occurs in young adults, patients present with one side of the eye The headache is accompanied by conjunctival hemorrhage, photophobia, lacrimation and sweating, and the patient can also have nausea and vomiting, and part of it is accompanied by photophobia and phonophobia, and symptomatic treatment is mainly given.