The symptoms of a benign (non-cancerous)brain tumour depend on its size and where it is in the brain.
Some slow-growing tumours may not cause any symptoms at first. When symptoms occur, it's because the tumour is putting pressure on the brain and preventing a specific area of the brain from functioning properly.
Increased pressure on the brain
Common symptoms of increased pressure within the skull include:
new, persistent headaches – which are sometimes worse in the morning or when bending over or coughing
persistent nausea and vomiting
vision problems – such as blurred vision, double vision, loss of part of the visual field (hemianopia), and temporary vision loss
epileptic fits (seizures) – which may affect the whole body, or you may just have a twitch in one area
Location of the tumour
Different areas of the brain control different functions, so the symptoms of a brain tumour will depend on where it's located.
For example, a tumour affecting the:
frontal lobe – may cause changes in personality, weakness in one side of the body, and loss of smell