Hi I've had this issue since 2002. That's 18 years. At one time I went to every doctor imaginable including many at Cleveland clinic to get answers for my symptoms. I will say this that search helped me greatly. I ended up diagnosed with having SVT....neurocardiogenic syncope....and finally the rheumatologist diagnosed me with fibromyalgia and autonomic disorder which gets was part of that. I believe the unable to get a full breath without almost yawning a n.v d the tightness ....that isnt something else... falls in the autonomic disorder spectrum. I'm interested to see what you guys make of this theory? Like I said I've been at this probably more than anyone I know. Sure for some people it could be asthma or other causes but I believe the autonomic nervous system is faulty in people like us that have this and Gerd is only a small part of the problem. Like I said it's on a spectrum so some worse some better. I'd be interested in what other issues you guys have if any besides issues getting the full satisfying breath. Thanks Joe