Grandson had hand, fooot and mouth disease about 2 weeks ago, better, had 1 year old check up and got flu shot yesterday, but had a bit of a cold. Last night my daughter gave him a litttle bit of a whole wheat waffle and this morning his lips were swollen, as she was giving him some Benadryl she noticed inside his mouth was white. Benadryl seems to be helping and lips look a little better and he seems to be acting ok. What about the white inside the mouth? Thank You.