<unk>  is a group of inherited diseases that cause progressive muscle degeneration and weakness and eventually decreasing the life span.
Spinal muscular atrophy
Muscular dystrophy
Distal spinal muscular atrophy type 1
Hereditary spastic paraplegia
Kennedy disease
Duchenne muscular dystrophy
Charcot-Marie-Tooth Syndrome
Chondrodystrophy