Ds is 14months, the past few days he has been walking with a limp. It comes and goes. I've studied the bottom of his foot and can't find any splinters or anything. I've applied pressure to his foot and ankle and he doesn't seem to be in any pain. Anyone know what could be causing this? Oh, this is probably unrelated, but sometimes he walks on his tippytoes, I think he's just being goofy though.