One thing not yet mentioned is nutrition. Dry/cracked skin could be a sign that the body may be lacking in certain nutrients, possibly essential fatty acids.
(Disclaimer: I'm not a doctor and I don't play one on television.
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One of the simplest solutions to add Omega-3 fatty acid is to eat more fish (Sardines or Salmon are two examples) if you are able but it's just as easy to sprinkle Flaxseeds or Walnuts here and there on your food. There are many foods that contain healthy fats; eggs, peanut butter, tuna, pumpkin seeds, the list goes on.
