What Is Muscular Dystrophy?
5. Becker
A milder version of Duchenne, this form of MD also affects only males. Although it appears later and progresses more slowly, the severity of the disease varies widely. Onset can occur in childhood, but it is usually first seen during adolescence or early adulthood.
Because muscle weakness progresses more slowly in Becker, life expectancy goes further, and most people live into middle age. Mobility can be maintained by many people well into their 30s. Heart problems are a common complication with this form of MD.
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