For years I have seen many of the kids in my school developing a distinctive dry pinky red rash under their bottom lips spreading across the chin in winter and cold weather, usually as a result of repeatedly licking their bottom lips (or so it seems). Now I have noticed that DD (2.7) has developed a similar rash and is also licking her lower lip. In addition, she has a patch of the same dry looking pink skin around the outer corner of one eye (a bit like a panda's eye patch). She rubs it and says it is sore.
Does anyone know what this rash might be and how I can treat it?