I don't know. Sometimes I take to a spell of sneezing and will sneeze a dozen times right in row, and sometimes I wake up and I'm stuffed up, but I've never been able to narrow it down as an allergy. Probably is.
Wife and I recently moved from Oklahoma to Ohio though and I'm not nearly as stuffy, sneezy or itchy as I was in OK. Hell, come to think of it, I could have played as many as three of the seven dwarfs in Oklahoma. smile
Good luck,
dan