Actinic keratosis (AK), sometimes called solar keratosis, is a scaly or crusty bump on the skin’s surface. The top of the bump may appear dry or rough, while the base may be tan, red, pink or a combination of these colors. It may itch or feel tingly or prickly. More than one keratosis is called keratoses.
AK can be the first sign of squamous cell skin cancer. Because AK is considered a pre-cancerous condition, it’s important to have it treated and to continue to have your skin checked regularly in case it returns. If you have dry, rough or scaly areas on your skin, see a dermatologist right away.