Actinic keratosis

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Actinic keratosis - close-up	Actinic keratosis - ear	Actinic keratosis on the arm	Actinic keratosis on the forearms
Actinic keratosis on the scalp

Actinic keratosis is a small, rough, raised area found on skin that has been exposed to the sun over a long period of time.

Over many years, some actinic keratoses may develop into a type of skin cancer.

Solar keratosis; Sun-induced skin changes - keratosis; Keratosis - actinic (solar)

Actinic keratosis is caused by sun exposure, but it takes many years or decades to develop.

Risk factors for actinic keratosis include:

• Having fair skin, blue or green eyes, or blond or red hair
• History of kidney or other solid organ transplant (people who take medicines that suppress the immune system)
• Long-term, daily sun exposure (for example, if you work outdoors)
• Multiple, severe sunburns early in life
• Older age

Review Date: 10/08/2010
Reviewed By: Linda Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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