The symptoms of a brain tumor can vary depending on the location, size, and type of tumor. However, some common symptoms that may be indicative of a brain tumor include:

1. Headaches: A persistent headache, especially if it is worse in the morning or if it does not respond to pain medication, can be a sign of a brain tumor.
2. Seizures: Seizures that occur in a person who has not had them before, or seizures that are increasing in frequency or severity, can be a symptom of a brain tumor.
3. Nausea and vomiting: Nausea and vomiting can occur if a tumor is causing increased pressure within the skull.
4. Vision or hearing problems: A brain tumor located in or near the area responsible for vision or hearing can cause problems such as blurred vision, double vision, or hearing loss.
5. Cognitive or memory problems: A brain tumor can cause problems with memory, concentration, or other cognitive functions.
6. Weakness or numbness: A tumor located in the brain or spinal cord can cause weakness or numbness in the arms or legs.
7. Personality changes: A brain tumor can sometimes cause personality changes or mood swings