Interferons are a group of immune system proteins -- alpha, beta, and gamma -- produced by the body. They act in different ways to control the activity of the immune system. They also have antiviral properties. (Remember that another theory regarding relapses in people who already have MS is that they may be triggered by viruses.) So far, experts have found that interferon beta is effective in treating multiple sclerosis (MS).
If you have progressive relapsing multiple sclerosis (PRMS), your condition will get steadily worse from the very beginning.
But you also will experience distinct relapses, with or without full recovery. Between relapses, the disease continues to gradually worsen.
PRMS is the least common type of multiple sclerosis. It affects about 5% of all people with MS.