ahai, I am having a burning sensation on the loower left corner of my mouth with light discoloration, it's Slight purple with yellowish white spots on it. This past week I had like 4 canker sore in my gum caused from emotional stress. There are only W now. And this buring sensation. I don't have any cold sores, and my lip is slightly swollen fromcanker sore? I was wondering what it could be.? I knew my lips were severely chapped, d it did put on lip balm, and I am taking aloevra, but I am worried about it.