Thanks for your question on HCM.
I can understand your situation and problem.
Yes, your
dystonia can cause breathing difficulty.
Breathing consists inspiration and expiration.
Both these are done by muscles.
Inspiratory muscles expand the
rib cage and allows lungs to take air in.
In expiration lung recoil and expiratory muscles allow air to breath out from the lungs.
So in both these activities, muscles play very important role.
Since you are suffering from dystonia, possibility of involvement of muscles of respiration is high.
So dystonia is seems to be the cause for your breathing difficulty.
Consult your doctor and discuss all these and start appropriate treatment.