Myotonic Dystrophy Definition, Causes and More

By lio

Reviewed: dr. vanta

Article Sources

Article Sources

• 1. NHS Choices, NHS, www.nhs.uk/conditions/muscular-dystrophy/
• 2. 'Myotonic Dystrophy.' Genetic and Rare Diseases Information Center, U.S. Department of Health and Human Services, rarediseases.info.nih.gov/diseases/10419/myotonic-dystrophy.
• 3. 'The Myotonic Dystrophies.' Muscular Dystrophy UK, www.musculardystrophyuk.org/about-muscle-wasting-conditions/myotonic-dystrophy/myotonic-dystrophy-factsheet/.

Medical Expert

More About Us

Muscular dystrophy is a group of rare genetic diseases that gradually cause muscles to weaken.¹NHS Choices, NHS, www.nhs.uk/conditions/muscular-dystrophy/ Myotonic dystrophy is the most common form of muscular dystrophy to start affecting people in adulthood. Usually starting in their 20s or 30s, people with myotonic dystrophy may notice progressive muscle weakness as well as being unable to relax some muscles after use.²‘Myotonic Dystrophy.’ Genetic and Rare Diseases Information Center, U.S. Department of Health and Human Services, rarediseases.info.nih.gov/diseases/10419/myotonic-dystrophy.

The severity of myotonic dystrophy varies widely from life threatening to barely noticeable. Although there is currently no cure, there are treatments available. Understanding this rare disease and the resources available can be helpful for those with myotonic dystrophy and their loved ones.³‘The Myotonic Dystrophies.’ Muscular Dystrophy UK, www.musculardystrophyuk.org/about-muscle-wasting-conditions/myotonic-dystrophy/myotonic-dystrophy-factsheet/.

1. Muscular Symptoms of Myotonic Dystrophy

The age at which symptoms start and their severity vary widely depending on the type of myotonic dystrophy a person has. The earlier symptoms begin, the more severe they're likely to be.

Typically, a person with myotonic dystrophy notices weakness in smaller muscles, such as the ones in their face, eyelids, jaw and neck. They may have difficulty gripping objects or trip over their own feet. They may also notice muscle stiffness in their hands and jaw. These symptoms often start in adulthood and progress very slowly. Some people with myotonic dystrophy never experience severe symptoms and their lifespan is not affected.³‘The Myotonic Dystrophies.’ Muscular Dystrophy UK, www.musculardystrophyuk.org/about-muscle-wasting-conditions/myotonic-dystrophy/myotonic-dystrophy-factsheet/.