Primary progressive multiple sclerosis (MS) is a form of MS in
which the disease is progressive from the start. Symptoms such as muscle
weakness, leg dragging, and stiffness become worse, and nerve function
deteriorates steadily, though this occurs at different rates in different
Primary progressive MS occurs in just a small number of people with
MS. In these people, the illness may be severe from the start with a quick
progression of neurological problems over several months. There are no periods
when symptoms do not occur (remission).
How this information was developed to help you make better health decisions.