10. Rough, Scaly Patches
Keep a look out (and feel for) for rough, scaly patches that may range from brown to dark pink. You will often find them on a fair skinned person with a history of sun damage.
These will often appear on the face, head and hands. These rough patches are called actinic keratoses and are precancerous skin lesions.
If you aren’t certain, ask a doctor and then keep an eye on the area for any changes.