Actinic keratosis - Symptoms & causes - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/actinic-keratosis/symptoms-causes/syc-20354969
WEBDec 17, 2022 · Overview. An actinic keratosis (ak-TIN-ik ker-uh-TOE-sis) is a rough, scaly patch on the skin that develops from years of sun exposure. It's often found on the face, lips, ears, forearms, scalp, neck or back of …
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