I have had MS since 1976... you survivors of this disease, will have one hell of a ride...
There isn't a specific "stage 4" for PPMS (Primary Progressive Multiple Sclerosis). However, people with PPMS generally have a poorer prognosis compared to other forms of MS due to the lack of remission periods. On average, individuals with MS live about seven years less than the general population. Most people with PPMS Show Full Answer