MS types are divided into 4 categories; RRMS, PPMS, SPMS, and PRMS. Relapsing Remitting MS is the most common form. People between the ages of 20 to 40 are usually who are diagnosed with this form of MS and generally twice as many women have MS than men do. Researchers believe hormones are linked to this ratio, but studies have yet to be conclusive of this speculation.

RRMS affects approximately 85 percent of MS patients and is diagnosed by observing the cycles of remission and relapses. Symptoms may come and go for years, without ever becoming more severe. Remission occurs when symptoms disappear altogether and a relapse is when they appear again. People with RRMS generally show no sign of disability during the remission period.

Primary Progressive MS only affects a small percentage of individuals and is characterized by the lack of distinct cycles of relapse and remission. The severity …