For 10 points, name this disease that is characterized by loss of myelin in the central nervous system, and is often abbreviated MS.
Kurtzke developed a scale to measure the disability status of people with this disease, which can be treated with the drug Avonex or other forms of interferon beta. This disease was first studied by Jean-Martin Charcot, and its clinical manifestations are similar to neuro-myelitis optica. The dissemination of white matter lesions in space and time are used to diagnose this disease, whose phases include secondary-progressive and relapsing-remitting. For 10 points, name this disease that is characterized by loss of myelin in the central nervous system, and is often abbreviated MS. 
Kurtzke developed a scale to measure the disability status of people with this disease, which can be treated with the drug Avonex or other forms of interferon beta.
multiple sclerosis [or or disseminated sclerosis; accept MS before mentioned] 