In 1996, the United States National Multiple Sclerosis Society standardized the following four subtype definitions: (Lublin et al.
Multiple sclerosis is a disease in which the myelin substance that covers the axons of nerve cells degenerates.
Multiple sclerosis is difficult to diagnose in its early stages.
Multiple sclerosis (MS) is a chronic, inflammatory, noninfectious disease that affects the central nervous system (CNS).
In 1868, the neurologist Jean-Martin Charcot recognized multiple sclerosis as a distinct, separate disease.
Currently there are no approved treatments for primary progressive multiple sclerosis, though several medications are being studied.
The name multiple sclerosis refers to the multiple scars (or scleroses) on the myelin sheaths.