Types of MS: (https://www.nationalmssociety.org/What-is-MS/Types-of-MS)
Multiple Sclerosis has 4 basic disease courses: Clinically Isolated Syndrome (CIS), Relapse Remitting MS (RRMS), Secondary Progressive MN (SPMS), Primary Progressive MS (PPMS).
Clinically Isolated Syndrome (CIS) is where you have some signs and symptoms of MS, but it doesn’t necessarily meet criteria. You may, or may not, develop MS.
The most common first course is RRMS. It is characterized with flare ups or exacerbations, which often end, symptoms will disappear, and you will go back to normal. About 85% of people are initially diagnosed with this form of MS.
Secondary Progressive MS (SPMS) occurs in some people after a RRMS DX and it characterized as constantly worsening of MS after which symptoms never go away.
Primary Progressive MS (PPMS) this stage of MS is another fist stage of diagnosis, with about 15% of people getting this diagnosis. It is a worsening neurological condition from the get-go. You can have relapses but there is a continual worsening condition through time.