The symptoms of dizziness when you sit up have the following causes: 1. It may be related to a change in position. If you lie down for a long time and suddenly get up, you will have a drop in blood pressure resulting in insufficient blood supply to the brain and thus symptoms of dizziness. 2. If you suffer from cervical spine diseases, such as cervical disc herniation and intervertebral stenosis, you may also experience dizziness and dizziness when you sit up. 3. If you experience significant vertigo, If you have vertigo, nausea, vomiting, it may be related to having vertigo, or it may be related to vestibular problems resulting in otoliths or Meniere’s syndrome, anemia, low blood sugar, etc. 4. If you have dizziness when you sit up, it may be related to staying up late at night, resulting in physical fatigue or qi and blood deficiency. 5. If you have cerebral arteriosclerosis, cerebral blood supply deficiency, etc., you may also have dizziness, and patients can go to the hospital for examination The patient can go to the hospital for examination to determine the cause of the disease before treatment.