Spinal muscular atrophy (SMA) is a recessively inherited neuromuscular disorder cause by the progressive degeneration of cells contained by the spinal cord and brainstem. The onset of tenderness ranges from before birth to childlike adulthood, and progresses beside age. SMA affects children with varying severity, range from the severe and usually fatal SMA type 1 (Werdnig-Hoffman disease) to milder forms that are associated beside longer survival but significant morbidity.
If it is a concern, both parents should be genetically tested & talk to a genetic counselor. Since it is a recessive gene, it doesn't other show up right away in the tot.
im not sure but try these sites
http://www.muscular-dystrophy.org/inform...
http://www.muscular-dystrophy.org/resear...
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