Actinic keratosis


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Symptoms

By Mayo Clinic staff

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Image showing an actinic keratosis 
Actinic keratosis

The signs and symptoms of an actinic keratosis include:

  • Rough, dry or scaly patch of skin, usually less than 1 inch (2.5 centimeters) in diameter
  • Flat to slightly raised patch or bump on the top layer of skin
  • In some cases, a hard, wart-like surface
  • Color ranging from pink to red to brown, or flesh-colored
  • Itching or burning in the affected area

Actinic keratoses are found primarily on areas exposed to the sun, including your face, lips, ears, back of your hands, forearms, scalp and neck.

An actinic keratosis sometimes resolves on its own, but typically returns again after additional sun exposure. If just scratched or picked off, an actinic keratosis will return.

When to see a doctor
Because it can be difficult to distinguish between noncancerous spots and cancerous ones, it's best to have new skin changes evaluated by a doctor, especially if a spot or lesion persists, grows or bleeds. See your doctor or ask for a referral to a dermatologist if a skin lesion:

  • Is painful
  • Itches or burns
  • Oozes or bleeds
  • Becomes scaly or crusty
  • Changes in size, shape, color or elevation
References
  1. Jorizzo J, et al. Actinic keratosis. http://www.uptodate.com/home/index.html. Accessed Oct. 28, 2010.
  2. Actinic keratoses. American Academy of Dermatology. http://www.aad.org/public/publications/pamphlets/sun_actinic.html. Accessed Oct. 28, 2010.
  3. Shoimer I, et al. Current management of actinic keratoses. Skin Therapy Letter. 2010;15:5.
  4. Habif TP. Premalignant and malignant nonmelanoma skin tumors. In: Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Edinburgh, U.K.; New York, N.Y.: Mosby Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00030-4--s0300&isbn=978-0-7234-3541-9&type=bookPage&sectionEid=4-u1.0-B978-0-7234-3541-9..00030-4--s0300&uniqId=224808926-3#4-u1.0-B978-0-7234-3541-9..00030-4--s0300. Accessed Oct. 28, 2010.
  5. Duncan KO, et al. Epithelial precancerous lesions. In: Wolff K, et al. Fitzpatrick's Dermatology in General Medicine. 7th ed. New York, N.Y.: The McGraw-Hill Companies; 2008. http://www.accessmedicine.com/content.aspx?aID=2981340. Accessed Oct. 28, 2010.
  6. Sunscreens/sunblocks. American Academy of Dermatology. http://www.aad.org/public/publications/pamphlets/sun_sunscreens.html. Accessed Oct. 28, 2010.
DS00568 Jan. 7, 2011

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