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What are the symptoms of SMA?

SMA symptoms
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What are the symptoms of SMA?

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SMA is characterized by a progressive loss of muscle control and movement and increasing weakness due to the loss of motor neurons in the spinal cord. Proximal muscles (muscles closest to the center of the body, such as those in the trunk and neck) are more severely affected than distal muscles (muscles furthest from the center of the body, such as those in the hands and feet). Normal growth and development can place additional demands on already weakened muscles. There is a wide range of severity of SMA; however, even in its moderate form, SMA can limit function and mobility. People with SMA either never acquire, or progressively lose, the ability to walk, stand, sit and eventually move. Although the disease varies in terms of age of onset and severity, most patients start to show symptoms during infancy or as toddlers. People with SMA often develop bone and/or spinal deformities which may require surgical treatment. Respiratory illnesses may be more common for people living with SMA

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