Yes I get them after a flare, I usually feel flu like following it

I do, I think it is a stress reaction, but we also have allergies and can develop new allergies. I got bit by fire ants a few years ago and was fine, got bite a second time and had a bad reaction, so now I have a epipen. During my cancer treatments I develop a allergy to adhesives, bandages nearly tore my skin up, it looked like the kind of diaper rash you would rush a baby to the ER for. The scars got so bad they became wounds and have caused scars where my picc line was. I have also developed food intolerance's.

My nasal passages get swollen. Very uncomfortable and hard to breath.

Sometimes but for me its constant and cant always tell as I suffer badly with colds and allergy rhinitis so I suffer quite a lot anyway.

I feel it has to be fibro related for me because of the weakness and extreme fatigue that accompanies it.