Also known as Duchenne/Becker muscular dystrophy, DBMD, pseudohypertrophic muscular dystrophy
What is it?
Duchenne muscular dystrophy (DMD) is an X-linked genetic disorder that affects the muscles, leading to muscle wasting that progresses over time.1
What Causes It?
Duchenne is caused by a mutation (change) in the DMD gene, which provides instructions for making a protein called dystrophin, which connects and maintains muscle cells’ structure. Mutations in the gene prevent muscle cells in the body from producing dystrophin, causing muscle weakness and heart problems.1
What Are Some Common Symptoms?1
- Delayed motor development (taking longer to learn to sit, stand, or walk)
- Enlarged calf muscles (pseudohypertrophy)
- Muscle weakness
- Toe walking or waddling gait
- Using hands to get up off the floor (Gower’s maneuver)
- Progressive enlargement of hear (cardiomyopathy)
- Breathing problems
How Many People Have It?
Duchenne affects an estimated 16 live male births per 100,000 in the U.S.2
Duchenne and Becker muscular dystrophy. MedlinePlus website. https://medlineplus.gov/genetics/condition/duchenne-and-becker-muscular-dystrophy/. Accessed January 6, 2021.
Duchenne muscular dystrophy. NIH: Genetic and Rare Diseases Information Center website. https://rarediseases.info.nih.gov/diseases/6291/duchenne-muscular-dystrophy. Accessed January 6, 2021.
Intended for U.S. audiences only
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Rare Experiences
View All ExperiencesLevi
Duchenne Muscular Dystrophy (DMD)“I have Duchenne, my muscles are different, but I am a lot more than my Duchenne.”
Tiffany and Wil
Duchenne Muscular Dystrophy (DMD)“In the beginning, we focused on what he was going to lose. Once we saw what he provided to those around him, Duchenne became just a part of who he is rather than his whole identity.”