Actinic Keratosis: Symptoms, Causes, Diagnosis, Treatment, and Prevention

What is Actinic Keratosis?

Actinic keratosis is a rough, scaly patch that forms on sun-exposed skin. These spots are also called precancerous skin lesions. They often appear on the face, ears, neck, hands, or arms. In the United States, actinic keratosis is common among adults who spend a lot of time outdoors. Because these spots can turn into skin cancer, early detection is important.

Symptoms of Actinic Keratosis

Actinic keratosis can look different from person to person. However, there are some common signs to watch for. If you notice any of these, you should talk to a dermatologist:

  • Rough, dry, or scaly patches on the skin
  • Flat or slightly raised bumps
  • Patches that are pink, red, brown, or flesh-colored
  • Itching, burning, or tenderness in the area
  • Crusting or bleeding spots
  • Sometimes, these spots feel easier to notice by touch than by sight. Over time, they may grow larger or become more noticeable.

    Causes and Risk Factors

    Most cases of actinic keratosis are caused by long-term sun exposure. Ultraviolet (UV) rays from the sun damage skin cells, leading to these sun damage skin spots. Other sources of UV light, like tanning beds, can also cause actinic keratosis. Several factors can increase your risk:

  • Fair skin, light hair, or light eyes
  • Older age
  • History of frequent sunburns
  • Living in sunny climates
  • Weakened immune system
  • Because UV exposure adds up over time, people who work or play outdoors are at higher risk.

    How Actinic Keratosis is Diagnosed

    Doctors usually diagnose actinic keratosis by looking at your skin. First, they will examine any rough or scaly patches. Sometimes, a dermatologist may take a small sample of skin, called a biopsy. This test checks for signs of skin cancer. Early diagnosis helps prevent serious problems later.

    Treatment Options

    There are several actinic keratosis treatment options. Your doctor will choose the best one for you based on your skin and the number of spots. Common treatments include:

  • Cryotherapy (freezing the spot with liquid nitrogen)
  • Topical creams or gels (applied to the skin)
  • Photodynamic therapy (using light and medicine to destroy cells)
  • Curettage (scraping away the spot)
  • Laser therapy
  • Most treatments are quick and done in the office. After treatment, your skin may be red or sore for a short time. However, most people heal quickly.

    Prevention Tips

    Preventing actinic keratosis is possible with good sun protection habits. Here are some simple tips to help keep your skin healthy:

  • Wear sunscreen with SPF 30 or higher every day
  • Reapply sunscreen every two hours, especially after swimming or sweating
  • Wear hats, sunglasses, and protective clothing
  • Stay in the shade during peak sun hours (10 a.m. to 4 p.m.)
  • Avoid tanning beds and sunlamps
  • Check your skin regularly for new or changing spots
  • Because sun damage adds up over time, it is never too late to start protecting your skin.

    When to See a Dermatologist

    If you notice any new, rough, or changing spots on your skin, you should see a dermatologist. Early treatment can prevent actinic keratosis from turning into skin cancer. In addition, regular skin checks are important for anyone with a history of sun exposure or previous skin problems.

    For personalized advice on actinic keratosis, consult a dermatologist. Your doctor can help you choose the best care for your skin.