1. Persistent headaches
Headaches are one of the most common signs of a brain tumor, affecting about 50% of those who have this form of cancer. The pain tends to be worse when you wake up in the morning or if you move suddenly. These types of headaches do not typically respond to the use of pain medication.
The sudden onset of seizures is also common signs of a brain tumor, especially if you’ve never had one before. Brain tumors may apply pressure to the cells in the brain, interfering with electric signals and causing a seizure. 50% of people who have brain tumors have at least one brain seizure according to the American Cancer Society.