Spinal Muscular Atrophy (SMA) is a term applied to a number of different disorders, all having in common a genetic cause and the manifestation of weakness due to loss of the motor neurons of the spinal cord and brainstem.
The most common form of SMA is caused by mutation of the SMN gene, and manifests over a wide range of severity affecting infants through adults.
For more information about the topic Spinal muscular atrophy, read the full article at Wikipedia.org, or see the following related articles:
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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