Many people experience headaches, dizziness, nausea, and other discomforts in their daily lives. They are commonly caused by two major categories: organic lesions and non-organic lesions. 1. Common non-organic lesions: mental stress and fatigue can cause a condition of insufficient blood supply to the vertebral artery, resulting in symptoms such as dizziness and nausea. Long-term high mental tension and physical fatigue also tend to aggravate the headache and dizziness. When patients take certain drugs for certain diseases, headache, dizziness and nausea can occur. Excessive consumption of coffee and alcohol can also make the symptoms of dizziness and headache appear or worsen. 2. Organic lesions: cerebrovascular diseases (cerebral infarction, cerebral hemorrhage), severe anemia, hypertension or hypotension, hypoglycemia, some inner ear diseases, cervical spondylosis, etc. can cause headache, dizziness, and nausea. There are also traumatic brain injury, certain epilepsy, plant nerve dysfunction, advanced coronary heart disease, and colds that can occur. The most common conditions are inadequate blood supply to the basilar artery and cervical spondylosis. Organic lesions must be given high priority. For non-organic lesions, self-regulation alone is required to relieve symptoms. For organic lesions, specialized treatment in a hospital is required.