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Causes
By Mayo Clinic staffIf 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 a leftover indicator of an old, resolved condition. Or it could be a marker of a perfectly harmless (benign) condition.
Sometimes, despite extensive testing, the cause of brain lesions remains unknown. Among the known possible causes of brain lesions are:
- Brain aneurysm
- Brain AVM (arteriovenous malformation) (abnormal connections between blood vessels in the brain)
- Brain tumor (cancerous (malignant) or noncancerous (benign))
- Encephalitis
- Hydrocephalus (a congenital brain abnormality)
- Multiple sclerosis
- Stroke
- 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.
