The progression of<unk>  is highly variable—much more so than Duchenne muscular dystrophy. There is also a form that may be considered as an intermediate between Duchenne and<unk>  MD (mild DMD or severe<unk> . Severity of the disease may be indicated by age of the patient at the onset of the disease. One study showed that there may be two distinct patterns of progression in<unk> . Onset at around age 7 to 8 years of age shows more cardiac involvement and trouble climbing stairs by age 20, if onset is around age 12, there is less cardiac involvement. The quality of life for patients with<unk>  can be impacted by the symptoms of the disorder. But with assistive devices, independence can be maintained. People affected by<unk>  can still maintain active lifestyles.
Becker muscular dystrophy
Limb–girdle muscular dystrophy
Fukuyama congenital muscular dystrophy
Duchenne muscular dystrophy
Ullrich congenital muscular dystrophy
Jokela type spinal muscular atrophy
Myotonic dystrophy
Distal spinal muscular atrophy type 2