I have anxiety and a lot of baseline stress which I'm sure contributes to the heightened sensitivity and probably inflammation levels as well. Funny you mention diet. I plan to do diet shortly that eliminates wheat, dairy, sugars etc. to see if that helps. And I will work on my stress levels. I always wondered why I sleep better and breathe better on vacation!
As for aging, I think life has taken a toll on me. Dark hollows under the eyes... May be the jaw issue or may be sinuses , congestion, UV, who really knows. I wish I knew what started the ball rolling... Stress or sleep?