Spinal Muscular Atrophy (SMA): Symptoms

If you have questions or are worried about anything, call the Neurogenetics Unit at 617-726-5732. You can also reach the genetic counselor at 617-726-4878.

What are the symptoms of spinal muscular atrophy (SMA)?

Symptoms depend on your child’s age and which type of SMA he has.

The most common symptoms of SMA are:

• Muscle weakness
• Delayed milestones (in babies)
• Trouble using certain muscles or limbs (in children, teens and adults)

Rev. 3/2018. Reviewed by the MGfC Family Advisory Council. This webpage is intended to provide health information so that you can be better informed. It is not a substitute for medical advice and should not be used to treatment of any medical conditions.