Deihibo is correct in RR I think, but PPMD is different. MD is always, no replapses.

I was DXed with anedotal (my stories) of what's been happening the last 12 years) visual and auditory provoked potentials, LP and MRI, andeverything confirmed mine and my doctor's belief though he said RR to give me a chance to try a CRAB (insurance companies won't pay PPs) but next 3 neuros say PP. PP is only in about 10 or 15% of MS population. PPs tend to have lighter lesion loads, more physical symptoms. I'm almost classic.