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What are brain lesions?

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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 because there are many different types.

SOURCES:

Merriam-Webster Medical Dictionary: "Abscess;" "Infarct;" "Lesion;" and "Tumor."

WebMD Medical Reference: "Alzheimer's Disease: The Basics."

eMedicineHealth: "Multiple Sclerosis (MS) FAQs;" "The Central Nervous System and Multiple Sclerosis--Causes;" "Brain Abscess;" "Alzheimer Disease;" "Arteriovenous Malformations;" "Stroke, Ischemic;" "Cerebral Palsy;" and "Brain Metastasis."

WebMD Medical Reference from Healthwise. "Adult Brain Tumors Treatment (PDQ®) - Classification)."

Reviewed by Christopher Melinosky on September 14, 2020

SOURCES:

Merriam-Webster Medical Dictionary: "Abscess;" "Infarct;" "Lesion;" and "Tumor."

WebMD Medical Reference: "Alzheimer's Disease: The Basics."

eMedicineHealth: "Multiple Sclerosis (MS) FAQs;" "The Central Nervous System and Multiple Sclerosis--Causes;" "Brain Abscess;" "Alzheimer Disease;" "Arteriovenous Malformations;" "Stroke, Ischemic;" "Cerebral Palsy;" and "Brain Metastasis."

WebMD Medical Reference from Healthwise. "Adult Brain Tumors Treatment (PDQ®) - Classification)."

Reviewed by Christopher Melinosky on September 14, 2020

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What causes brain lesions?

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