Actinic keratoses are caused by long-term UV damage to the skin’s keratinocytes. UV radiation from the sun damages the DNA in the skin’s keratinocytes, so they are no longer under normal cellular regulation. These unregulated damaged skin cells become precancerous actinic keratoses and can evolve into true skin cancer, like squamous cell carcinoma. At Dermatology Associates of the Bay Area, we specialize in the early detection and treatment of actinic keratoses.
The risk factors for their development include:
Actinic keratoses may be small and subtle at first, which is why they are sometimes easier to feel than to see. Common features include:
AKs often appear in clusters and may enlarge over time. While they are not cancerous themselves, an estimated 2–16% of untreated AKs can progress into squamous cell carcinoma. With a greater number of keratoses and larger keratoses, the higher the probability of malignant transformation. Because there is no way to predict which actinic keratoses will develop into cancer, dermatologists recommend treating all diagnosed lesions.
At Dermatology Associates of the Bay Area, we offer a variety of treatment options tailored to the number, location, and severity of lesions:
The most common treatment. The lesion is frozen, causing it to scab and peel away. Quick, effective, with minimal downtime.
Scraping off the lesion under local anesthesia, sometimes followed by electrocautery. These are usually done to the thicker AKs or hyperkeratotic actinic keratoses.
Stimulates the immune system to attack abnormal cells.
A chemotherapy cream that is applied at home and is highly effective in treating larger surface areas. Treatment duration is typically 2-4 weeks long.
The blue light treatment, as it is commonly known, utilizes a photosensitizing agent, Levulan, to induce a photochemical destruction of the actinic keratosis. We routinely perform this procedure in our practice for patients with numerous facial lesions.
Our team of board-certified dermatologists is dedicated to providing expert skin care for patients of all ages. At Dermatology Associates of the Bay Area, we combine advanced dermatology techniques with personalized care to help you achieve healthy, beautiful skin.
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AKs can evolve into skin cancer. Treating them reduces the risk of squamous cell carcinoma.
Uncommonly. However, new lesions can still develop because the underlying UV damage persists. Ongoing monitoring and sun protection are essential.
Usually 7–10 days. The treated area may scab, blister, or peel before it is completely healed.
Yes. Regular use of a broad-spectrum sunscreen, combined with sun-protective hats and clothing, can significantly reduce the likelihood of future lesions and the risk of skin cancer.
At least once per year for a full-body skin exam, or more often if you’ve had multiple lesions or a history of skin cancer.
Actinic keratoses are a warning sign from your skin—don’t ignore them.
At Dermatology Associates of the Bay Area, our PAs and dermatologists
provide expert diagnosis and effective treatments to remove precancerous lesions and protect against skin cancer.
If you’ve noticed rough, scaly patches on sun-exposed skin, schedule your consultation in Petaluma or Hercules today.
Get a comprehensive skin examination with our board-certified dermatologists
Most major insurance plans accepted for medical dermatology services
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