Neuromuscular Conditions
Spinal Muscular Atrophy
Spinal Muscular Atrophy (SMA) is a rare, genetically inherited neuromuscular condition that causes progressive muscle weakness and loss of movement due to muscle wasting (atrophy). This may affect crawling and walking ability, arm, hand, head and neck movement, breathing and swallowing.
There are different forms of SMA and a wide spectrum of how severely children, young people and adults are affected. It can be classified as Types 1, 2, 3 and 4, with type 1 being the most severe.
