millipede
suffering from EIA for all 26 years of my life, those symptoms sound familiar!
best to get yourself down the docs and ask for an asthma test on a tredmill. they get you to run at various speeds and see what your rection is.
i get it in the summer (hayfever triggers it) and on cold winters days.
a ventolin inhalyer helps a lot when you have an attack but as you can see its not too inhibiting and the fitter you get the lesser the symptoms
dont worry you wont die! :)
note
non EIA is much more dangerous and serious and people do die from such attacks!