Lesions are basically scars caused by any number of things; trauma, illness, or infection, just to name a few. MS lesions are scars caused by the demyelination of nerves in the spinal cord and brain. As more damage occurs, the number of lesions increases, which tends to be the case as Multiple Sclerosis advances.

Doctors are able to determine how much damage is done by the number and size of the lesions seen. MRI pictures of MS lesions help a doctor get a better idea of how much demyelination has already occurred and which lesions have reactivated. Of course there are always instances where nerves have been damaged and then remyelinated themselves. When this happens, the lesion may not show up at all.

The effects of MS Lesions on Brain

An abundance of lesions on the brain can sometimes cause certain symptoms to arise. Brain lesions cause changes in the …