Hello all again. I have a question about my original symptoms ie tachcardia, air hunger ( not feeling able to breath in fully). Had been waking with gasp shortly after going to sleep for over 20 years before waking with tachycardia and air hunger 10 years ago. Has anyone experienced this as a symptom of autoimmune hypothyroidism/hashi. Antibodies high and no treatmentuntil 8 years ago,except benzodiazepines, now addicted. I have been on levo now for 8 years. I don't want to confuse things, but I think I need to weedle out whether I may have some other problem too.