I've had enough weird allergic reactions to say anything is possible. No doctor will confirm it, and it's often subtle, so I either avoid things or take a Clartin.
This happens more when I'm in a "reactive" state, as in now. I had an allergy based sinus infection, which just puts my whole body on high alert. I could sneeze, get hives, headache. Eventually, it stops and I go back to normal.