What is actinic keratosis (AK)?

Updated: Jan 30, 2020
  • Author: Ginard I Henry, MD; Chief Editor: Gregory Gary Caputy, MD, PhD, FICS  more...
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Actinic keratoses (AK), also known as solar or senile keratoses, are scaly cutaneous papules, patches, or plaques on sun-damaged skin. They are most frequently seen in fair-skinned individuals with a history of chronic sun exposure.

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