Is an actinic keratosis skin cancer?

Not yet — it's usually described as 'precancerous.' An actinic keratosis is a patch of sun-damaged skin cells that can, over time, progress to a squamous cell carcinoma (a common skin cancer). Most individual AKs never turn cancerous, and some even go away on their own. The problem is there's no reliable way to know which ones will progress, which is exactly why a dermatologist should assess and often treat them.

What does an actinic keratosis feel like?

Often you feel it before you see it — a rough, dry, sandpapery patch that can be easier to detect with your fingertips than your eyes. They're usually small, pink, red, or skin-colored, sometimes with a scaly or crusty top, and they show up on sun-exposed skin: face, ears, scalp (especially if balding), lips, backs of the hands, and forearms. Some are tender or itchy.

Can I treat an actinic keratosis at home?

This isn't one to self-treat with over-the-counter products. Because AKs sit on the spectrum toward skin cancer, they need a professional to confirm what they are and choose treatment — options like cryotherapy (freezing), prescription creams, or light-based therapy. A doctor also checks whether a lesion has features suggesting it's already becoming a cancer, which changes the plan entirely.

Actinic Keratosis (Sun Spots That Aren't Just Sun Spots), Explained

Actinic keratosis (also called solar keratosis) is one of the most common reasons people see a dermatologist — rough, scaly patches that build up after years of sun exposure. They matter more than an ordinary "sun spot" because they sit on the pathway toward skin cancer. This is a condition where the honest advice is simple: get it looked at.

What it is

An actinic keratosis (AK) is a patch of skin cells damaged by ultraviolet light — from the sun or from tanning beds — accumulated over many years. Dermatologists describe AKs as precancerous: they're an early, in-between stage that can progress to a squamous cell carcinoma (SCC), one of the most common skin cancers (StatPearls).

They're extremely common in people with a lot of lifetime sun exposure, and more likely if you have fair skin, light eyes, a history of sunburns or tanning-bed use, are older, or have a weakened immune system (AAD).

How to spot one

AKs typically appear on the skin that's caught the most sun over a lifetime — face, ears, scalp (especially a balding one), lips, neck, backs of the hands, and forearms. Look and feel for:

A rough, dry, scaly, or sandpapery patch — often easier to feel than to see.
Color that's pink, red, tan, or skin-colored, sometimes with a raised or crusty surface.
A patch that's tender, itchy, or catches on things.
On the lips, a persistently dry, cracked, scaly area (actinic cheilitis).

Many people have several at once, because the surrounding skin has similar sun damage.

Why they need a doctor, not a cream

Here's the key fact: while any single AK has a low yearly chance of becoming cancer, that risk isn't zero and adds up across many lesions and years — and the majority of squamous cell carcinomas arise from these patches (StatPearls). There's no reliable way to tell by looking which AK will progress, so dermatologists generally treat them rather than watch and wait.

Certain features raise the concern that a lesion is already turning cancerous and needs prompt attention: rapid growth, a lump forming, bleeding, ulceration, pain, or redness and firmness at the base (PMC systematic review). Any of those is a reason to be seen sooner rather than later.

How they're treated

Treatment is quick and effective, and it's always guided by a professional (AAD):

Cryotherapy — freezing individual spots with liquid nitrogen, the most common approach.
Prescription creams (such as topical fluorouracil, imiquimod, or others) that treat many lesions and the sun-damaged "field" around them.
Photodynamic therapy — a light-activated treatment for widespread AKs.
Curettage or a biopsy if a lesion looks like it may already be a cancer.

Prevention is the real story

Because AKs are cumulative sun damage, sun protection is both treatment and prevention — it can even help existing damage settle over time. That means daily broad-spectrum sunscreen, shade, hats and clothing, and no tanning beds. If you're weighing formulas, our guides on chemical vs mineral sunscreen and sun protection for kids go deeper. A lifetime of sun protection is the single best way to reduce new AKs — and skin cancers.

When to see a doctor

For actinic keratosis, seeing a professional isn't a last resort — it's the plan. See a dermatologist if:

You have a rough, scaly, or crusty patch on sun-exposed skin that doesn't heal or keeps coming back.
A spot is growing, thickening, bleeding, ulcerating, or becoming painful — don't wait on these.
You have many such patches, a history of lots of sun or tanning-bed use, or previous skin cancers.
Any new, changing, or non-healing spot anywhere — the general rule for possible skin cancer.

A private skin assessment can help you document and describe a spot you're worried about, but for anything possibly precancerous or cancerous it is not a substitute for a doctor — it's informational only, and a rough, scaly, or non-healing patch on sun-exposed skin should be examined in person.