SMA can affect the muscles involved in breathing. How much - and what effect this has day-to-day is very individual - no two people are the same. Maybe you regularly have difficulties with breathing and need to use equipment to help you; quite possibly you’ve had times when you’ve been in hospital due to breathing problems. Or, maybe you’ve never had breathing problems. You could just as likely be someone in between. 

Page last reviewed: August 2021

Next review due: August 2022