Rough, scaly patches of skin that are considered precancerous and are due to sun exposure. Prevention is to cut sun exposure and wear sunscreen. Treatments include performing cryosurgery (freezing with liquid nitrogen), cutting the keratoses away, burning them, putting 5-fluorouracil on them, and using photodynamic therapy (injecting into the blood [..]

A thick, scaly patch of skin that may become cancer. It usually forms on areas exposed to the sun, such as the face, scalp, back of the hands, or chest. It is most common in people with fair skin. Als [..]

Scaly pink or red-brown raised spots or patches on the skin caused by overexposure to the sun. Actinic keratosis may be a precursor to skin cancer.

White or pink lesions on the Arms, hands, Face, or Scalp that arise from sun-induced DNA Damage to Keratinocytes in exposed areas. They are considered precursor lesions to superficial Squamous Cell Ca [..]

A thick, scaly patch of skin that may become cancer. Also called senile keratosis and solar keratosis.

This form of acne looks like a rough, scaly looking lesion; small, solid, elevated skin lesion less than 0.5 cm in diameter or a flat skin lesion that has a different color than the surrounding normal skin. It is a direct cause of cumulative sun exposure.

<dermatology> A skin lesion that is abnormally sensitive to the effects of ultraviolet light (sunlight). Thought to be a precancerous skin lesion that is more common in the fair-skinned or elderly individual. Approximately 20% of these skin lesions will develop into squamous cell carcinoma. Prevention includes the use of sun screen agents and [..]

A small rough spot on skin chronically exposed to the sun, occurs most frequently in fair skinned people.

A small rough spot on skin chronically exposed to the sun. Occurs most frequently in fair skinned people.

(medicine) A lesion on the skin, typically on the upper portion of the head, characterized by discolored, thickened or scaly growths of keratin, caused by exposure to the sun; common in fair-complec [..]