Hi all, I know I've asked this before, but in a different way. I feel the urge to sigh, that is to take a very big full deep breath with my lungs overinflating and my chest expanding really, unusually big, and often I feel that is not satisfying. I feel the need to do this every few seconds, especially when I walk or do any excersion, in fact that makes it worse. The only time this doesn't happen is in the five minute walk it takes me to get to my doctor (his office is two blocks from me.) I researched HVS (Hyperventilation Syndrome) and Adrenal Fatigue, but discovered that both are not officially accepted by the medical profession at large. So...could this be caused by abnormal breathing? (Though I don't see why, my breathing, as far as I know, hasn't changed since a month ago before this started.) Or is this a symptom of generalized anxiety and/or panic disorder? It does seems to be worse in certain situations, too. Thank you.