Sounds like stress or anxiety... I had this in 2002, I'd even by HUNGRY and after about 3 bites I couldn't eat anymore, when I went for the 4th bite I'd have to chew it about 50 times because I felt I would gag if I'd swallow! This went on for about 2 months. I don't want to get into the ENTIRE thing, but bottom line was if I took a Xanax before I ate I had NO problem finishing EVERYTHING on my plate! LOL!