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 the hands. Actinic keratosis. Actinic keratoses are scaly spots or patches on the top layer of skin.
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