< Back to All Videos thirdAGE > Types of MS: PPMS Up Next... 10 Types of MS:PRMS Types of MS:PRMS Risk Factors for MS What to Do When Your Doctor Suspects MS Loading the player ... Multiple Sclerosis Information Types of MS: PPMS Learn more about PPMS–one type of Multiple sclerosis. Related Videos Types of MS:PRMS Risk Factors for MS What to Do When Your Doctor Suspects MS Warning Signs + Early Symptoms of MS