Understanding Actinic Keratosis in Hawaii: What You Need to Know

You notice a rough patch on your skin that wasn’t there before. It feels a bit scaly, maybe a little pink or brown. At first, it seems like nothing serious. But in Hawaii, that patch could be actinic keratosis, or AK, a precancerous skin condition that deserves your attention. Living in Kailua, Oahu, means you face intense year-round sun exposure. That makes understanding AKs crucial, especially if you are over 50 and have spent years outdoors.

This post will guide you through what actinic keratosis is, why it happens more often in Hawaii, how to spot it, treatment options, and what you should avoid. You will also learn how to protect your skin and when to see a provider like Doug Williams, MPAS, PA-C, at Hawaiian Islands Dermatology.

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What Actinic Keratoses Are

Actinic keratoses are rough, scaly patches that develop on skin damaged by ultraviolet (UV) rays from the sun. They are considered precancerous because they can progress to squamous cell carcinoma, a type of skin cancer, if left untreated. Research shows that about 5 to 10 percent of AKs may turn into squamous cell carcinoma over time.

These patches form because UV rays damage the DNA in skin cells. Over years or decades, this damage accumulates, causing abnormal cell growth. AKs are most common in adults over 50, especially those with fair skin or a history of frequent sun exposure.

Because AKs are precancerous, early detection and treatment are important. They are a warning sign that your skin has been harmed and needs care.

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What Actinic Keratoses Look Like

Actinic keratoses are often easier to feel than see. They usually feel like rough or sandpaper-like patches on the skin. Visually, they can appear pink, red, or brown and may have a scaly or crusty surface.

Common locations include:

• Forehead

• Scalp (especially if hair is thinning)

• Ears

• Hands

• Forearms

  
  

These areas get the most sun exposure and are where AKs tend to develop. Sometimes they blend in with surrounding skin, making them hard to spot. If you notice a patch that feels different or rougher than the rest of your skin, it’s worth having it checked.

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Why Hawaii Sees More Actinic Keratoses

Hawaii’s tropical location means UV levels are high year-round, often reaching 11 or more on the UV index. This is much higher than many other parts of the United States. The intense sun exposure increases the risk of skin damage and AK formation.

Many residents and visitors spend decades outdoors enjoying the beaches, hiking, and gardening. While hats and sunscreen are recommended, they are often skipped during quick errands or daily activities. This daily, cumulative sun exposure adds up.

The combination of strong UV rays and frequent outdoor living makes actinic keratoses a common skin concern in Kailua, Oahu, and across the Hawaiian Islands.

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Treatment Options for Actinic Keratoses

If you have one or more AKs, several treatment options are available. Doug Williams, MPAS, PA-C, and the team at Hawaiian Islands Dermatology can help you choose the best approach based on your skin and the number of lesions.

Common treatments include:

• Cryotherapy: Freezing the lesion with liquid nitrogen to destroy abnormal cells. This is quick and effective for isolated spots.

• Topical medications: Creams like fluorouracil (Efudex), imiquimod (Aldara), and tirbanibulin (Klisyri) are applied to the skin to target multiple AKs or larger areas. These treatments cause redness and peeling as damaged cells shed.

• Photodynamic therapy (PDT): Used for larger fields of sun damage. A special light activates a medication applied to the skin, destroying precancerous cells.

  
  

Each treatment has pros and cons. Cryotherapy works fast but treats only visible spots. Topical creams and PDT address both visible and hidden damage but require weeks of treatment and healing.

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What Not to Do with Actinic Keratoses

Ignoring rough patches or assuming they are just signs of aging can be risky. AKs can progress to skin cancer if left untreated. Waiting more than three months to get a patch checked increases the chance of complications.

Avoid DIY treatments like over-the-counter freeze kits. These products are not designed for precancerous lesions and can cause skin damage or infection.

Do not try to self-diagnose. Some skin cancers can look like AKs, so professional evaluation is essential.

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Prevention of Actinic Keratoses

Preventing AKs means protecting your skin from UV damage every day. Here are practical steps to reduce your risk:

• Use a broad-spectrum zinc oxide sunscreen with SPF 30 or higher daily, even on cloudy days.

• Wear UPF-rated clothing that blocks UV rays. Long sleeves and pants help protect arms and legs.

• Choose a wide-brim hat to shade your face, ears, and neck.

• Schedule an annual skin check with a provider experienced in sun damage and precancerous lesions.

  
  

These habits help maintain skin health and catch any problems early.

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When to See a Provider

You should see a provider like Doug Williams, MPAS, PA-C, if you notice any of the following:

• A rough patch that does not heal or goes away after several weeks

• Bleeding or crusting on the patch

• Growth or change in size

• Change in color or texture

  
  

Hawaiian Islands Dermatology offers in-person visits at 1051 Keolu Dr Suite 107, Kailua, HI, and telehealth services for residents on the Big Island, Maui, Kauai, Molokai, and Lanai. They accept Quest and Medicaid insurance.

Early evaluation helps catch AKs before they develop into more serious skin cancers.

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A Local Note on Actinic Keratoses in Hawaii

Actinic keratoses are a story unique to Hawaii’s sunny climate and outdoor lifestyle. Many adults over 50 in Kailua, Oahu, have spent decades under strong UV rays. That means you may already have some sun damage even if you don’t see it.

The good news is that catching AKs early makes treatment simpler and more effective. Small lesions respond well to cryotherapy or topical creams. Larger areas can be managed with photodynamic therapy.

Taking sun protection seriously and scheduling regular skin checks with a trusted provider like Doug can keep your skin healthier for years to come.

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If you notice a rough patch that wasn’t there before, don’t wait. Book an appointment with Hawaiian Islands Dermatology online at patient.klara.com or call (808) 263-3233. Their clinic is located at 1051 Keolu Dr Suite 107, Kailua, HI 96734. Protect your skin and catch actinic keratoses early to reduce your risk of skin cancer.