Hi, I have a white coating on my tongue and in my throat- when I remove it, it is difficult, and it comes back. It is uncomfortable and bothersome and causes bad breath. I have been to 2 doctors, both thought it was thrush (I am otherwise completely health, not vitamin deficient or anything). They treated me with Diflucan, but it did not help. I think maybe I have an allergy or acid reflux? I don't know because I don't have heartburn, but I do eat a lot of spicy food.