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Actinic Keratosis

Actinic Keratosis

Actinic keratosis (AK) is abnormal growth of the skin. It results in a rough, scaly, or crusted patch of skin. AK tends to occur on sun-damaged skin.

AK is not cancer but it can sometimes change to squamous cell skin cancer. Treatment includes removing lesions and monitoring for skin cancer.

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Causes

AK is caused by long term excessive sun exposure. Ultraviolet rays from sunlight can cause skin damage. Over time, this damage can cause abnormal growth of the skin such as AK.

Risk

Factors that increase your chances of getting AK include:

  • Fair complexion
  • Easy sunburning
  • Extra exposure to sun

Symptoms

Symptoms may include:

  • Spotted or smeared red, thinning skin
  • Rough, scaly or crusted patches

Diagnosis

Your doctor will ask about your symptoms and medical history. A physical exam will be done.

A biopsy of the lesion may be done. The skin will be closely examined for cancer.

Treatment

Talk with your doctor about the best treatment plan for you. AK lesions increase your risk of skin cancer. The lesions are usually removed to decrease this risk. Your doctor will also monitor the lesion for signs of cancer.

The exact method of removal will be determined by the number and location of the lesions.

AK may be removed with:

  • Surgery
  • Cryosurgery
  • Chemical peel
  • Photodynamic therapy

Medications may also be applied over the skin. More than one treatment may be required. Over time the medication will remove the AK. Medication may be an option for people with multiple AKs. Options include:

  • 5-fluorouracil (5-FU) cream
  • Imiquimod topical cream
  • Diclofenac gel
  • Ingenol mebutate gel

The procedures and medications will remove AK and allow healthy skin to grow in its place. Most treatments have some risk of scarring or discoloration of the skin.

Prevention

To reduce your chances of getting AK, take these steps:

  • Avoid sun exposure.
  • Protect your skin when outdoors. Wear long sleeves, long pants or a long skirt. Use a wide-brimmed hat, especially during the middle of the day.
  • Use sunscreen with an SPF of at least 15.

 

Content was created using EBSCO’s Health Library. Edits to original content made by Rector and Visitors of the University of Virginia. This information is not a substitute for professional medical advice.

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