Public Health Agency of Canada
Symbol of the Government of Canada

Share this page

Canadian Multiple Sclerosis Monitoring System

What is Multiple Sclerosis?

Multiple sclerosis is an unpredictable, often disabling disease of the central nervous system (brain and spinal cord). The disease attacks the myelin which is a protective covering wrapped around the nerves of the central nervous system. MS may affect vision, hearing, memory, balance and mobility. (Source: MS Society of Canada)

Multiple sclerosis is most commonly diagnosed in adults aged 15 to 40 years and women are three times more likely to be diagnosed with it than men. It’s estimated between 55,000 to 75,000 Canadians are currently living with this disease.