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Prevalence

LEARN MORE ABOUT MS > Prevalence

It is estimated that 400,000 people have been diagnosed with multiple sclerosis in the United States. The true number of cases may be even higher due to patients' reluctance to have the disease reported and the uncertainty in multiple sclerosis diagnosis.

In general, women are affected with MS at almost twice the rate of men. Caucasians are more than twice as likely as others to develop the disease. MS is five times more prevalent in temperate climates, such as the northern United States, than in tropical regions.