Some forms of dementia may not be confined to the central nervous system; they may not even begin in the brain.

Neurological autoimmune diseases involve an immune system attack on the central or peripheral nervous system (PNS). Multiple sclerosis is the most common and well-known of these conditions, but ...

Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system caused by the immune system. B cells, which are a type of white blood cell, play a role in the development of MS ...