Nausea and Vomiting
This is one of brain cancer’s most common symptoms and one of the worst to experience. Often the swelling brain tumor creates pressure inside the skull and this causes intense pain. Vomiting may occur because it’s such an uncomfortable experience. However, there’s another reason why it may happen.
Some parts of the brain are responsible for nausea including the cerebellum. This makes it more likely that the patient will experience vomiting. It’s more likely to occur if they suddenly change position from lying flat to sitting up or at specific stages of the day (via John Hopkins Medicine).