The symptoms of a brain tumor often are the same as those of other diseases and may develop gradually. That's why they may be overlooked for a long time before diagnosis.
Although a brain tumor rarely causes headaches, someone with no history of headaches who develops them should be seen by a doctor. Headaches from a brain tumor tend to be worse upon waking and ease during the day. Other symptoms may include
vomiting and nausea
new onset of seizures
weakness involving one side of the body, such as an arm and leg on the same side
trouble talking or change in speech
loss of coordination
changes in vision or abnormal eye movements
memory or personality changes
ringing and hearing loss in one ear
The symptoms noted above are not specific for brain tumor. In fact, most often any of these symptoms are related to some other cause.
The specific symptoms of a brain tumor depend on its size and location. They can be caused by several factors, including
increased pressure in the skull
damage to vital tissue
swelling and fluid buildup
hydrocephalus, sometimes called "water on the brain," which results when the flow of cerebrospinal fluid is blocked and builds up in the brain