This is so frusterating! This has been happening to me off and one for years now since I was a teenager (now 29.) I used to think it was asthma but I just went to the Dr. (who was very unhelpful) and he said it's just allergies and gave me allegra and an inhaler. They don't help at all - by the way.
This problem used to be a lot more sporadic in the past, however, the past few years these episodes have increased - though only every so many months (and then it was typically at night when in bed.) NOW, it's anytime of day and I hate it.
Right now I am having one of these 'episodes' where I can't get a full breath. And I agree with a prior poster that THAT is what is causing my anxiety. This will happen to me anytime... most recently... when I've been sitting at my desk, walking down the street, driving - anywhere.
And my nose and head seem to get congested when this occures. Then from trying to take in so many big breaths, my mouth/throat get dried out. Also, I cough sometimes too. Does this happen to anyone else?
I start trying to take in more air and then I get light-headed... it's a horrible situation. I know that everyone on here understands... It makes me feel like I"m going crazy!
I have come up with a ton of consulusions, including:
- heart problems
- digestion of certain foods
- allergies
- lung or throat cancer
- etc.
I'm sorry that this is happening to all of us!

It consumes my thoughts when it happens. I find myself jumping up to a standing position, or stretching/yawning...
right now i'm breating fine but my nose is completely running.
WHATEVER THIS IS, IT SUCKS.