Types of MS

The course of MS is unpredictable. Some people are minimally affected by the disease while others have rapid progress to total disability, with most people fitting between these two extremes. Although every individual will experience a different combination of MS symptoms, there are a number of distinct patterns relating to the course of the disease.

Relapsing-Remitting MS

In this form of MS there are unpredictable relapses (exacerbations, attacks) during which new symptoms appear or existing symptoms become more severe. This can last for varying periods (days or months) and there is partial or total remission (recovery). The disease may be inactive for months or years.

Secondary Progressive MS

For some individuals who initially have relapsing-remitting MS, there is the development of progressive disability later in the course of the disease often with superimposed relapses.

Primary Progressive MS

This form of MS is characterised by a lack of distinct attacks, but with slow onset and steadily worsening symptoms. There is an accumulation of deficits and disability which may level off at some point or continue over months and years.

Relapsing Progressive MS

This form of MS is characterised by a gradual progression of disability from the onset of the disease and is accompanied by one of more relapses.