I can tell you what I have learned about the two.....I may have a little of both, however, last year when my symptoms started, my CT scan showed swollen turbinates...dr's suggested allergy testing and shots if appropriate, I did the testing, not the shots last year.....i was also told I had a deviated septum and nasal spur....so in addition to some significant seasonal and indoor allergies, I had that to contend with, it was too much to sort out actually....so I figured I would get through the winter and try to make a decision about it if and when it popped up again....it came back this spring, but I still could not make the connection to the sensitivity I had to AC on the nose and allergies....finally I started allergy shots 5 weeks ago....before then, whenever I had any AC on in a room or car, store wherever, the stuffiness, congestion and fatigue would start.....I started the shots and can see where I can tolerate more cold temps without getting the nose symptoms flaring..I might feel a little stuffed, but it has calmed down a lot....my theory: I believe that when they told me that my turbinates were swollen last year, it was due to allergies....they got better during the winter, but flared again with the spring..and AC....one doctor has said that allergies will make your nose more sensitive to cold temps.....when I look back, my nose has been affected by cold my whole life....I could never go out in the winter night without getting sick.....so I am taking a wait and see approach to see if the allergy shots will continue to shrink the turbinates and nasal merabranes...also, I have to figure out whether I am going to get the deviated septum fixed, which can cause a blockage and the same feelings of bad allergies.....I don't believe the allergy issue is an exact science...but sometimes...you have to sort it all out.....I have had family merabers who are also very sensitive to AC temps.....not sure what all that means