The stress of being an Aspie like all stress can make one vulnerable to physical illnesses but Aspergers do not cause them.
Most shortness of breath is caused by heart or lung problems. Anxiety a common co morbid of autism and panic attacks can cause them too.
Assume a physical symptom is being caused by a physical illness and see a doctor to find or rule out a physical cause.
_________________
Professionally Identified and joined WP August 26, 2013
DSM 5: Autism Spectrum Disorder, DSM IV: Aspergers Moderate Severity
“My autism is not a superpower. It also isn’t some kind of god-forsaken, endless fountain of suffering inflicted on my family. It’s just part of who I am as a person”. - Sara Luterman