A majority of people with brain tumors experience seizures. For many people, a seizure is one of the first symptoms of a brain tumor. Seizures are especially common in people who have slow-growing gliomas or meningiomas and with people who have metastatic brain tumors.

Some people may not experience a seizure until after surgery to remove a brain tumor. Common features of seizures in people with brain tumors include:

  • Sudden onset of seizures
  • Loss of consciousness and body tone, followed by twitching and relaxing muscle contractions
  • Loss of control of bodily functions
  • Biting of the tongue or risk of biting of the tongue
  • Short periods of no breathing (30 seconds)
  • Short duration (2 to 3 minutes)

After a seizure, people may experience:

  • Sleepiness
  • Headache
  • Confusion
  • Sore muscles
  • Brief weakness
  • Numbness