Headache and nausea after staying up all night may be caused by sleep deprivation or overuse of the brain, or it may be caused by migraine, you need to adjust your lifestyle first, and if serious, use medication under the guidance of a doctor. If it is caused by sleep deprivation or overuse of the brain, mainly from the lifestyle intervention, first of all, pay attention to rest, make up enough sleep, can alleviate the symptoms of headache and nausea after staying up all night. Usually, you should avoid working late at night or playing games to avoid over-exertion of the brain, and develop regular work and rest habits. If a migraine attack occurs after a late night, the headache and nausea will also occur, and the patient will also show symptoms such as photophobia and phonophobia. You can apply non-steroidal anti-inflammatory analgesic drugs under the guidance of a doctor, such as celecoxib capsules or diclofenac sodium extended-release tablets. Headache and nausea after staying up late can also be caused by other reasons. If the headache and nausea after staying up all night is not clear about the triggering cause, it is recommended to go to a regular hospital for examination, and after a clear diagnosis, take appropriate treatment and intervention measures in time.