For over a week now I've had sore, flaky lips that split and leak clear fluid. I thought it was a reaction to a cream or other beauty product as I'm quite sensitive to make up and skin care products. I've just realised the dc have the same thing. Dd has a small crack at the corner of her mouth that hurts her, and smaller dd has sore, red lips that look crusty around the lip line. None of us have a fever, or sore throat, but we're all run down with stuffy noses. I'm wondering if it's the central heating but it would be weird to effect all of our lips, right?