Actinic keratosis: A crusty or scaly bump that forms on sun-exposed skin.

Merkel cell carcinoma usually appears as a single painless lump on sun-exposed skin.

Aim for about an ounce to cover all sun-exposed skin.

Squamous cell carcinoma is commonly a red, scaling, thickened patch on sun-exposed skin.

Call for an appointment with your health care provider if areas of persistent roughness or scaliness develop in sun-exposed skin.

For individuals from these families, the incidence of melanoma is higher for sun-protected rather than sun-exposed skin.

A persistent red bump on sun-exposed skin.

Usually the patient will notice a rapidly growing dome-shaped tumor on sun-exposed skin.

The cancers appear on sun-exposed skin, like the nose or cheeks.

Blistering and fragility of sun-exposed skin are the most common skin (cutaneous) symptoms.