How do brain lesions diagnose multiple sclerosis, lewy body dementia, etc?
Brain lesions are the actual physical changes in the structure of the brain or individual cells of the brain that account for the psychiatric symptoms we may see, for example tangles and plaques in alzheimer's disease that cause clinical symptoms like memory loss or mood/personality changes.
Some brain lesions are found on imaging, like a ct or MRI scan, while others requires microscopic exam.
MULTIPLE SCLEROSIS (MS)
DEMENTIA WITH LEWY BODIES