The information below shows a list of types of Multiple Sclerosis, with information as to the prevalence of each of these types. Estimates of the people affected are calculated based on the available statistic.
| Disease | Prevalence Estimate | US people estimate | Statistic Used for Calculation |
| Multiple Sclerosis (overall) | approx 1 in 700 or 0.14% or 388,571 people in USA | 388,571 | 1-in-700 (NIAID) |
| Schilder's Disease | N/A | N/A | rare |
The following statistics relate to the prevalence of Multiple Sclerosis:
For more information about types of Multiple Sclerosis, refer to our section on types of Multiple Sclerosis.
The medical term 'prevalence' of Multiple Sclerosis usually refers to the estimated population of people who are managing Multiple Sclerosis at any given time, whereas the annual diagnosis rate of new cases of Multiple Sclerosis is called the 'incidence'. For more information on prevalence and incidence statistics, see about prevalence and incidence statistics.
Footnotes:
1. Rose and Mackay, 1998, The Autoimmune Diseases, Third Edition
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