Spinal muscular atrophy is a genetic disorder caused by the loss of specialized nerve cells that control muscle movement. The specialized nerve cells are motor neurons and are found in the spinal cord and the brain. When the muscles do not receive signals from the nerves, they shrink and become very weak. Symptoms:

  • Can begin at different ages
  • Can be mild to severe

Treatments include medicines used to delay the disease progression and physical therapy to help strengthen muscles.