If you've been told that you have a brain lesion, speculating on a cause may prove fruitless until you and your doctor have more information. The brain lesion could be left over from an old, resolved condition or a sign of some harmless (benign) condition. Or, it could represent something more serious.

Sometimes, despite extensive testing, the cause of brain lesions remains unknown. Among the known possible causes of brain lesions are:

  1. Brain aneurysm
  2. Brain AVM (arteriovenous malformation)
  3. Brain tumor
  4. Encephalitis
  5. Hydrocephalus
  6. Multiple sclerosis
  7. Stroke
  8. Traumatic brain injury

Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.

Oct. 25, 2011