There are many aspects that cause headache, dizziness and vomiting in the elderly: 1. Patients who suddenly experience severe headache and dizziness accompanied by jet-like vomiting are generally considered to be suffering from acute cerebrovascular disease, mainly seen in patients with cerebral hemorrhage disease, which usually appears suddenly under emotional excitement or activity; 2. Elderly people who chronically and repeatedly experience dizziness, headache and vomiting may be related to cerebral nerve dysfunction, cerebral arteriosclerosis, and insufficient blood supply to the brain. Usually when the patient is tired and poorly rested, it is easy to induce spasm of cerebral blood vessels, resulting in insufficient blood supply to the brain, and the patient will have dizziness, headache and vomiting symptoms.