My son, who is just turning 2, has extra skin on the inside of his mouth corners. What is this? It doesn't seem to hurt him but I've never seen something like this, nor can I find anything about this upon searching internet. May I add, he recently had surgery. We found he was tongue and lip tied. He is also speech delayed and eats very little finger foods, just chicken fingers for the most part and potato chips. Just wondering if this all ties into something greater. I really want to know what this extra skin is.