Many people will have the experience that after staying up late, especially after staying up all night without sleep, they will have symptoms of dizziness, vomiting and stomach discomfort. This happens mainly because of the following aspects: 1, related to brain nerve dysfunction, when the patient stays up late without sleep will lead to the patient’s brain nerve dysfunction, the brain is in a state of fatigue, will appear dizziness, nausea, vomiting, weakness, sleepy symptoms. 2, after staying up late may induce the patient’s cerebral blood vessels to spasm, resulting in the patient’s brain blood supply is insufficient, the brain is in a state of ischemia, lack of oxygen. 3. After staying up late, there will be a certain impact on blood pressure, which will lead to an increase in blood pressure, which will also easily lead to dizziness, head swelling, nausea and vomiting.