oh this is cool. well, i have bizzare symptoms for 2 years now. starting Feb March April each year Shanghai, when it gets dry and cold, i wake up each morning with stuff, mucous, in my lungs. Q: is it from my lungs -asthma / bronchitis? or is it post nasal drip dripping into my lungs? i never cough. ever. i simlpy breath in -expland my lungs -and the mucous comes up. also i feel it seems to be coming from that part of the roof of my mouth -i am assuming that part leads up to the nasal cavity? i dont have allergies, i think. my nose never runs. its never blocked either. i always seem to be pulling mucus from the roof of my mouth where that little punching bag thingy hangs. as soon as the temp changes to WARM SUMMER this all stops. but on any day when the temp falls 15'C -whamo its back on a dime. so i am wondering if my bronchial tubes cant sweep away mucous in colder temps? there always seems to be some thin mucous there all the time. and in the winter it gets hard. well -- any takers?