I have 3 different breathing problems and ADHD. One of them is vocal chord dysfunction, which is caused by anxiety and stress. If you have sensory issues and get overloads often and that’s when you can’t breathe, or when you’re stressed/anxious, try going to a doctor and talking about it.
Basically, your vocal chords open when you breathe and close when you talk. But sometimes when you get sick, they decide to just close when you breathe for funsies. And then they don’t stop. And then when you get nervous, they forget how to work. It really sucks.
I don’t know if that’s what you have, I’m not a doctor, but I do know that I can’t breathe when my meds wear off because the crash makes me stressed and extra-emotional.