Any one care to play name that rash ๐Ÿ˜‚๐Ÿ˜‚( seriously though what is this)

๐ŸŽ

Itโ€™s not just his foot and hand just the two easiest spot to take the picture while he is nursing. Itโ€™s all over including his hair line. ๐Ÿ™„๐Ÿ˜ ๐Ÿ˜ฉHELP!