التصلب اللويحي
Multiple sclerosis (MS) is an autoimmune disease causing demyelination within the central nervous system. In the central nervous system, there are many cells encased in a fatty coating called the myelin sheath. This sheath allows for informational signals to be transmitted at greater speeds down through the cell. In multiple sclerosis, this sheath deterioration causes a slower transmission of nerve signals. This ultimately results in severe motor deficits.