Synonyms: spinal muscular atrophy type 1, infantile spinal muscular atrophy
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disease characterised by degeneration of alpha motor neurons in the spinal cord, resulting in progressive proximal muscle weakness and paralysis1.
This is a companion discussion topic for the original article at https://patient.info/doctor/neurology/werdnig-hoffmann-disease