<unk>  <unk>  is a nervous system disease that affects your brain and spinal cord.  It damages the myelin sheath, the material that surrounds and protects your nerve cells. This damage slows down or blocks messages between your brain and your body, leading to the symptoms of<unk> .
Multiple sclerosis
Paraneoplastic cerebellar degeneration
Amyotrophic lateral sclerosis
Idiopathic inflammatory demyelinating diseases
Multiple system atrophy
Acute disseminated encephalomyelitis
Central pontine myelinolysis
Chronic inflammatory demyelinating polyneuropathy