Actinic Keratosis (Keratoses) Symptoms, Signs, Treatment and Diagnosis

What is an actinic keratosis, and what does it look like? An actinic keratosis (AK), also known as a solar keratosis, is a small, rough spot occurring on skin that has been chronically exposed to the sun. Actinic keratoses generally measure in size between 2-6 millimeters in diameter (between the size of a pencil point and that of an eraser). They are usually reddish in color, with a rough