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Actinic Keratosis

Actinic keratoses (AKs): AKs form on skin that soaks up lots of sun over the years. An actinic keratosis (ak-ti-nik ker-ah-TOE-sis), or AK, is a rough, dry, scaly patch or growth that forms on the skin. Also called solar keratosis. An AK forms when the skin is badly sun damaged and has a 4-18% chance of progressing to a non-melanoma skin cancer.

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