Sores/blisters on the bottom of ds's feet?
DS (17 mo) has a handful of perfectly round slightly raised, red blisters/sores on the bottom of his feet and heels. What on earth could they be? They don;t look like HFM and there is nothing in his mouth or hands. In addition, though possibly completely unrelated, he has a bad case of diareaha (sp?) and a horrible diaper rash and some sores a bit outside of the diaper area, but they do not look like the blisters on his feet.
Should I be concerned? he grabs his feet a lot, but doesn't seem really bothered and he doesn't talk so I can't ask him questions.
ETA: he is barefoot 90% of the time