What is actinic keratosis, and what causes it?
Actinic keratosis, also called solar keratosis, is a precancerous skin condition that develops in sun-exposed skin, especially on the face, hands, forearms, and the neck. It is seen most often in pale-skinned, fair-haired, light-eyed people, beginning at age 30 or 40 and becoming more common with age.
What are the symptoms?
Actinic keratoses are small and noticeable red, brown, or skin-colored patches that don't go away. They commonly occur on the head, neck, or hands but can be found on other areas of the body. Usually more than one is present. They may:
Actinic keratosis needs to be evaluated by a doctor, especially if the keratoses become painful, bleed, become open sores, become infected, or increase in size.
How is actinic keratosis diagnosed?
Actinic keratosis is diagnosed through a skin examination. Your doctor may use a bright light or magnifying lens to look for growths, moles, or lesions. The scalp is examined by parting the hair. If there is a possibility of cancer, your doctor may take a sample of your skin and test (biopsy) it.
How is it treated?
Will actinic keratosis progress to cancer?
If you have actinic keratosis, you may have an increased risk for squamous cell carcinoma. There is no way to find out whether actinic keratosis will progress to squamous cell carcinoma or how fast this might occur. Keratoses on the ear and lip are at the highest risk of developing into cancer because of the sensitivity of the ear and lip to sun exposure.
How can I prevent actinic keratosis?
You can help prevent actinic keratosis by staying out of the sun and using sunscreen when you are in the sun. You should also examine your skin for the condition and other suspicious growths once a month, especially if you spend a lot of time in the sun.
To protect your skin:
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