So, the question is how to turn this into a disability claim?
This is not a disability any more then Dandruff or black heads.

Shallow breathing can be treated, as long as there are no Lung problems. Not unknown for people to even forgetting to breath in a sudden startling experience. Or to be so rapped up in a mental exercise they put their all into what they are doing and for some reason, odd as it is forget to breath.
What is this sleep apnea, sound asleep and suddenly awake to low oxygen and a feeling of dread.