Becker muscular dystrophy is a muscle-wasting condition, first described in 1956, which usually affects only males. It causes muscles to weaken and waste over time, leading to increasing and often severe disability.
In some cases, Becker muscular dystrophy can lead to life-threatening health problems, as heart and breathing muscles weaken. It is closely related to Duchenne muscular dystrophy, although is generally not as severe.
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