Nervous System and Nerve Diseases

Multiple Sclerosis

Multiple sclerosis is a disorder in which the myelin sheath that covers most of the nerve fibers is damaged or destroyed. The cause is unknown but it is an autoimmune disorder. This disorder is also called demyelination. Symptoms is based on the nerve fiber that are demyelinated. Moreover, the typical patterns of symptoms are Relapsing-remitting pattern, Primary progressive pattern, Secondary progressive pattern, Progressive relapsing pattern. If the sheath is able to repair nerve fibers, the normal function of nerve fibers can be recovered. Nonetheless, if the sheath is extremely damaged, the nerve fiber can be destroyed completely. The nerve fibers in CNS cannot be regenerated by themselves. Consequently, these nerve fibers are permanently damaged.