Actinic Keratosis FAQs

actinic keratosis symptoms

What is actinic keratosis? »

actinic keratosisActinic keratosis is a pre-cancerous skin lesion on the skin. They are usually rough, scaly patches that form on the areas that receive extensive sun exposure: the face, lips, ears, backs of the hands, forearms, scalp, or neck. These growths develop slowly and don’t have any signs or symptoms other than their appearance. A small percentage of actinic keratoses can eventually become skin cancer.

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What do actinic keratoses look like? »

These growths are not painful and are not overly disfiguring because they remain small. These are the signs:

  • The rough, scaly, dry patch of skin
  • Usually less than 1 inch in diameter
  • Flat to slightly raised patch or bump atop the skin
  • Sometimes can be hard and wart-like
  • Color may be pink, red, or brown
  • May itch or burn when brushed

Is actinic keratosis a form of skin cancer? »

These growths are “pre-cancerous,” meaning they are not cancer, but they may develop into skin cancer. If an actinic keratosis is left untreated it can turn into a squamous cell carcinoma. This happens in only 5 to 10 percent of cases of actinic keratoses, but it’s still wise to have the spot looked at by a board-certified dermatologist. 

What are the symptoms of actinic keratoses? »

These growths are not painful and are not overly disfiguring because they remain small. These are the signs:
Chryotherapy used to Removed an Keratosis on Patient Face.

  • Rough, scaly, dry patch of skin
  • Usually less than 1 inch in diameter
  • Flat to slightly raised patch or bump atop the skin
  • Sometimes can be hard and wart-like
  • Color may be pink, red, or brown
  • May itch or burn when brushed

What causes actinic keratoses to form? »

Actinic keratoses develop as the skin’s response to frequent or intense exposure to ultraviolet radiation from the sun or tanning beds.

Who is most prone to developing an actinic keratosis? »

Actinic keratoses develop due to exposure to UV radiation. But not everyone’s skin reacts the same way; one person may develop actinic keratosis, while another with the same exposure shows no signs. They are anything but rare, with estimates placing the number of Americans with one or more actinic keratosis at 58 million. 

These are certain risk factors that make a person more likely to develop an actinic keratosis:

  • You are over age 40
  • Live in a sunny locale
  • Have a history of sunburns
  • Have red or blond hair
  • Have blue or light-colored eyes
  • Tend to freckle or burn when exposed to sunlight
  • Have a personal history of actinic keratoses or skin cancer
  • Have a weak immune system due to chemotherapy, AIDS, or other causes

actinic keratosis treatment

How is actinic keratosis diagnosed? »

These are not complicated diagnoses. Your dermatologist will likely be able to determine if that lesion on your skin is an actinic keratosis with a simple examination. If there is any doubt, your dermatologist may use a curette, a small spoon-shaped tool, to scrape the lesion for a biopsy. Often, regardless of the result of the biopsy, this action can remove the entire actinic keratosis. 

Once a diagnosis has been made, it’s likely your dermatologist will recommend treatment, such as freezing the lesion with liquid nitrogen. If treated, virtually all actinic keratoses can be cleared up or removed before they turn into squamous cell carcinoma.

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How are actinic keratoses treated? »

Because actinic keratoses may develop into cancer, it’s a good idea to remove them as a precaution. Here are the typical methods:

Medications

These medications have been developed over the past decade or so. They cause the body to react and attack the abnormal actinic growths. These creams and gels cause inflammation and redness and then the actinic keratoses begin to crust and peel off. These are prescription drugs that are usually applied to the entire affected area:

  • Fluorouracil cream
  • Imiquimod cream
  • Ingenol mebutate gel
  • Diclofenac gel

Surgical removal

Cryotherapy using Cotton Swab and liquid NitrogenCryotherapy

— Actinic keratoses can be removed by freezing the growth with liquid nitrogen. This causes the lesion to crust and peel off. This takes just a few minutes.

Curettage

— A small scoop-shaped blade, known as a curet, is used to scrape off the damaged cells. Using the curet may complete the procedure, or we may also use electrosurgery, where an electric current destroys the affected tissue and closes off the blood vessels.

Photodynamic therapy

— In this method, a light-sensitive chemical is first applied to the affected skin. Then a special light is directed onto the area. This destroys the actinic keratoses.

Is there recovery after having an actinic keratosis removed? »

These are very minor procedures and these lesions do not grow to great depths. Removing them with curettage typically requires only a bandage. Cryotherapy can create a boil on the area for a day or so, and then it goes away, and the spot begins the process of drying out and peeling off. Light treatments also simply cause the actinic keratosis to peel away.

There isn’t any downtime or recovery after having these removed.

What is the cure rate for actinic keratosis? »

Removing these growths before they become skin cancer is 100 percent successful. Other growths may develop, but they can be removed the same way.

Can an actinic keratosis recur? »

Once an actinic keratosis is frozen and peels off or is removed with another method, it is usually gone. The method may not remove all of the damaged cells and it may need a second treatment later. But generally, treatments successfully remove these lesions for good. They don’t recur. 

Of course, once your skin has received lots of UV radiation over your lifetime and if you’ve already developed one or more actinic keratoses, you’re more likely to develop more in the future. That’s why you need to see a board-certified dermatologist at least once every year. 

What should I do to avoid developing new actinic keratoses? »

Sun damage and the mutation of skin cells into actinic keratoses and skin cancer is a cumulative thing. Over time and more and more hours in the sun, you increase the odds of developing an actinic keratosis or even skin cancer. 

Beautiful young woman at beach applying sunscreen on face and looking at camera. Beauty latin girl enjoying summer holiday while applying suntan lotion at sea. Portrait of happy woman with healthy skin applying sunblock on cheek.These are steps you should take to protect your skin and minimize the development of lesions such as actinic keratoses:

  • Limit your time in the sun — Sun exposure is what’s behind your actinic keratoses, so try and limit your exposure, especially between 10 a.m. and 2 p.m.
  • Use sunscreen — Sunscreen helps keep your skin from developing actinic keratoses and the sun damage that makes you look older, as well. Get a broad-spectrum sunscreen of 30 SPF or more. 
  • Cover up — Wear hats and clothing that protects your arms and legs. 
  • Say no to tanning beds — Tanning beds are every bit as harmful as the natural sun for UV radiation. 
  • Check your skin — Keep an eye on your skin yourself. Look for the signs of actinic keratoses and skin cancers. See a dermatologist once every year after you turn 40, earlier if you have fair skin and have had lots of sun exposure. 

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American Society for Mohs Surgery
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