<unk>  <unk> , also called Duchenne–Aran disease and Duchenne–Aran<unk><unk> , is a disorder characterised by the degeneration of lower motor neurons, resulting in generalised, progressive loss of muscle function.<unk>  is classified among motor neuron diseases (MND) where it is thought to account for around 4% of all MND cases.<unk>  affects only the lower motor neurons, in contrast to amyotrophic lateral sclerosis (ALS), the most common MND, which affects both the upper and lower motor neurons, or primary lateral sclerosis, another MND, which affects only the upper motor neurons. The distinction is important because<unk>  is associated with a better prognosis than ALS.
Progressive muscular atrophy
Progressive bulbar palsy
Lipodystrophy
Multifocal motor neuropathy
Cerebral atrophy
Osteodystrophy
Facial onset sensory and motor neuropathy
Progressive inflammatory neuropathy