Hi, I am here to try and find an answer for my problem. I had it happen again 3 days ago. It started with a funny feeling on my tongue, and an hour later, the right side of my tongue was extremely swollen. It got progressively worse over the next two hours, to the point where my whole tongue was swollen, and it moved into my gums, and neck. I could not eat, swallow, or talk. I was in extreme pain. This has happened before, but never to this extent. I took a lot of benedryl, and it was over ten hours until things were back to normal. Can stress do this?? Any time it happens I am stressed. I try to think of what I could of been exposed to, if it was an allergy, but there is never an answer. Anyone have any idea how I can prevent this? I have also had it happen in my feet, on the soles. Also very painful.