Definition :
SMA causes by muscles wasting and weakness.
It can be difficult for a person with SMA to stand, walk, control their head movement, and even in some cases, breath and swallow.
Causes :
Spinal muscular atrophy happen when motor neurons in the spinal cord and the brain stem either don't work or stop working because of changes in " Survival motor neuron" (sma1,sma2) genes.
Symptoms:
In SMA, the muscles most affected are those closest to the center of the body, such as shoulders, hips, thighs and upper back.
If the muscles of the back weaken, spinal curvatures (scoliosis) can develop.
Diagnosis :
Doctor will ask your medical history, family history and physical examination.
Test for diagnosis SMA may include:
- Blood test: to check missing or broken genes that can cause SMA.
- A muscle biopsy
- Amniocentesis genetic test
- Electromyography (EMG).
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