How common are brain lesions?

A lesion is an area of tissue that has been damaged through injury or disease. So a brain lesion is an area of injury or disease within the brain. While the definition sounds simple, understanding brain lesions can be complicated. That's because there are many types of brain lesions. read more

Brain tumor (both cancerous and noncancerous) Encephalitis (brain inflammation) Epilepsy; Hydrocephalus (a congenital brain abnormality) Multiple sclerosis; Stroke; Traumatic brain injury; While brain trauma of any sort may result in a concussion as well as a brain lesion, concussions and brain lesions are not the same thing. read more

Brain lesions (lesions on the brain) refers to any type of abnormal tissue in or on brain tissue. Major types of brain lesions are traumatic, infectious, malignant, benign, vascular, genetic, immune, plaques, brain cell death or malfunction, and ionizing radiation. Other chemicals and toxins have been associated with brain lesions as well. read more