More than 30 rare muscular dystrophy types cause progressive muscle weakness from inherited gene mutations. Combined, they affect about 1 in 5,000 to 8,000 people. Common subtypes vary by age of onset ...

Muscular dystrophy is a type of disease that causes the muscles in your body to lose strength and mass. As your muscles become weaker over time, it may be hard for you to do normal activities.

Becker muscular dystrophy (BMD) is a type of muscular dystrophy, a genetic condition that weakens and damages muscles. It can worsen with age. However, its symptoms are less severe than those of ...