Symptoms of SMA
The symptoms of SMA and when they first appear depend on the type of SMA you have.
Typical symptoms include:
- Floppy or weak arms and legs.
- Movement problems – such as difficulty sitting up, crawling or walking.
- Twitching or shaking muscles (tremors).
- Bone and joint problems – such as an unusually curved spine (scoliosis).
- Swallowing problems.
- Breathing difficulties.
SMA doesn't affect intelligence or cause learning disabilities.