Spinal Muscular Atrophy (SMA)

Spinal Muscular Atrophy (SMA) is a neuromuscular disease which causes a degeneration of the motor neurons resulting in progressive muscular atrophy. This can affect activities such as crawling, walking, sitting up and controlling head movement. In severe cases the muscles used for breathing and swallowing are affected. The lifespan of someone afflicted with SMA varies from early infant death to normal adult life with only mild muscle weakness. There are five types of SMA based on the age of onset and severity. Shortened life expectancy. Physical impairment.

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