Table 1.

Classification of NMD that most commonly affect the respiratory system

Rapidly progressive	Variable progression	Slowly progressive or stable
Amyotrophic lateral sclerosis	Duchenne muscular dystrophy	Spinal muscular atrophy
	Limb girdle muscular dystrophy	Myotonic dystrophy
	Myofibrillar myopathy	Post-polio syndrome
	Danon disease	Facio-scapulohumeral muscular dystrophy
	Mitochondrial myopathies	Becker muscular dystrophy
	Kennedy disease	Inclusion body myositis
	Myasthenia gravis	McArdle disease