Several days ago, I was working outside in dusty conditions, sweeping pine needles up to burn. After a few hrs. I quit. The next day my tongue swelled up, and I went to the store and bought some over-the-counter antihistamine. I took two and the swelling disapeared in a few hrs. A few days later, the same thing happened all over again. A few days later, my uppper lip swelled up and I tool a couple antihistamine. The swelling is not going down. My breathing is not compromised.