Like most everyone else that has posted to this thread, I have similar symptoms that have been described in many of the aforementioned posts.
While I am not a clinician, I have worked for many years in the pharmaceutical industry doing research and have some general observations/comments based on the previous postings:
1. It is very likely that there is not a single risk factor that is the cause of our breathing irregularities. More likely, it is combination of risk factors. So for example, someone who is prone to "panic attacks" or perhaps even mild/moderatre anxiety may have an increased likelihood of triggering this breathing irregularity.
2. Anxiety attacks are often charachterized by the inability to take a deep breath and/or hyperventilation. However, my understanding is that this is more acute; whereas, most of the postings seem to describe a more chronic condition.
3. I wonder how many posters to this thread have pets living in their home. It is quite possible that animal hair/dander, as well as dust, could trigger this irregularity.
4. I also wonder how many people live in close proximity to either a major metropolitan area or near a heavy industrial site. (or conversely, how many of you do not live near a major metro area or industrial site).
5. Despite all of the external conditions, I would seem that there is something internal that increases the likelihood that these external conditions will trigger this response... I am very cruious as to what that is.
On a personal note, I met with an leading allergist in the new york city area and she was stumped. My oxygenation was 98-99% (which is very good) and other typical tests for asthma proved negative. When she tried to suggest anxiety, I really had to disagree. For me, this has never been a problem and I found little correlation to my circumstances at the time of onset. Of course she still prescribed advair. My personal and professional opinion is that she was throwing darts and I chose not to become a dart board. By not filling the rx. My next step is to consult another allergist.