Secondary progressive multiple sclerosis (MS) is a form of MS in which symptoms are constant, do not improve, and may get increasingly worse. This is a result of steady damage to the nerves in the brain and the spinal cord.
The secondary progressive form of MS follows a phase known as relapsing-remitting MS, in which symptoms repeatedly appear or get worse, then improve. This cycle can repeat for many years before secondary progressive MS develops.
Primary Medical ReviewerAdam Husney, MD - Family Medicine
Anne C. Poinier, MD - Internal Medicine
Specialist Medical ReviewerBarrie J. Hurwitz, MD - Neurology
Current as ofMarch 12, 2014
WebMD Medical Reference from Healthwise