Hi I wanted to know if you can help me . My son is 2 years old and a couple days ago he started getting some type of small blisters on the bottom of his feet . They are red but in the middle its whitenad i tried to squeez it to see if it pops but it doesn't. Now I see it on his lip and his tongue and he tells me that it his tongue hurts. Any idea what it is & where its coming from ?