Multiple Sclerosis. The different types of multiple sclerosis follow different patterns of progression. There are four main types of multiple sclerosis, as well as benign and malignant forms of the disease. The main types of multiple sclerosis include relapsing-remitting, primary-progressive, secondary-progressive, and progressive-relapsing.
Yes. Multiple sclerosis is defined as relapsing remitting or a progressive form. About 85% of individuals start out relapsing remitting (episodes of new symptoms which last days to weeks then get better). A portion of these patient may develop progressive disability and fewer episodes (relapses) as time goes on. This is the secondary progressive phase. A minority start out progressive, without relapse.
Yes. Primary progressive, relapsing/remitting, secondary progressive, clinically isolated syndrome, radiologically isolated syndrome. Progressive relapsing is really a variation of relapsing remitting and is no longer considered a separate category.