Actinic keratosis (AK) is characterized by rough, scaly patches on areas of the skin that have been exposed to the sun for a prolonged period. These patches can vary in color, from skin-toned to reddish-brown, and are most commonly found on the face, ears, lips, backs of the hands, forearms, scalp, or neck. The texture of these patches is often described as sandpapery. Actinic keratosis is considered a precancerous condition because, if left untreated, it has the potential to develop into squamous cell carcinoma. It is a common condition, especially in older adults with fair skin, and its primary cause is cumulative sun exposure over many years. Treatment options include cryotherapy, topical medications, photodynamic therapy, and laser therapy. Preventative measures include regular use of sunscreen, wearing protective clothing, and avoiding excessive sun exposure.