Most people with multiple sclerosis (MS) have a type called relapsing-remitting MS (RRMS). It usually starts in your 20s or 30s.
If you have RRMS, you may have attacks when your symptoms flare up. These are called relapses.
An attack is followed by a time of recovery when you have no few or no symptoms, called remission. It can last weeks, months, or longer. The disease doesn't get worse during these breaks.