My 16 mo. old ds has recently developed a colorless bumpy "rash" for lack of a better word - in the past few months. It doesn't itch, it's just very fine cluster of bumps, mostly on his torso & feels a lot like sandpaper & looks a bit like goosebumps. Is it keratosis or something else? He's not a big eater yet - still loves breast milk best. Is it possibly a vitamin deficiency at his age? vit A? He gets cod liver oil, but not consistently. At what age does he need to shift his diet from breast milk to mostly food sources? He seems to be a little old to rely on mama's milk. My daughter was more interested in food by this age. To be fair, he is teething like mad right now & has a bad cold so it's natural to want to nurse more at the moment, but I'm concerned maybe the rash is telling me he's lacking in something. thanks!