ConditionSkin, hair & nails
Actinic Cheilitis
Actinic cheilitis is a precancerous condition of the lip, usually the lower lip, caused by years of sun exposure. The lip becomes dry, scaly, rough and pale, and the sharp border between lip and skin blurs. It is the lip version of actinic keratosis. Without treatment, a minority of cases turn into squamous cell carcinoma of the lip, so any persistent rough or crusted patch on the lip should be checked. Treatment with creams, freezing, laser or surgery is effective.
Also called: Solar cheilitis, actinic cheilosis, farmer's lip, sailor's lip
At a glance
- What it is
- Chronic sun damage of the lip that can progress to cancer.
- Who gets it
- Fair-skinned adults, usually over 40, who spend a lot of time outdoors.
- Key signs
- A dry, scaly, rough, pale or blotchy lower lip with a blurred lip line.
- Cancer risk
- A minority progress to squamous cell carcinoma, often after many years.
- Treatment
- Topical creams, cryotherapy, laser, photodynamic therapy or lip surgery (vermilionectomy).
When to get help
See a doctor within a day or two
- A lump, thickened area or ulcer on the lip that bleeds or has not healed within 3 weeks
- A rapidly growing or painful sore on the lip
- A firm lump under the jaw or in the neck along with a lip sore
Book a routine appointment
- A dry, scaly or rough patch on the lower lip that does not clear with lip balm within 4 weeks
- A lip that has lost its sharp outline or looks pale, white or blotchy
- Recurrent crusting or cracking in the same place on the lip
Usually safe to manage at home
- Ordinary chapped lips in cold or windy weather that heal within a week or two with lip balm
What causes actinic cheilitis
Ultraviolet (UV) light from the sun damages the DNA of cells in the lip. The lower lip is most exposed because it sticks out and faces the sun, and lip skin has very little melanin to protect it. Over many years, damaged cells multiply abnormally. Under the microscope, the changes range from mild sun damage to dysplasia (precancerous cells).
Risk factors
- Fair skin that burns easily, light eyes and hair
- Long-term outdoor work or hobbies: farming, fishing, sailing, construction, golf
- Living in sunny climates or at high altitude
- Older age and male sex
- Smoking, which adds to the damage
- A weakened immune system, for example after an organ transplant
- Rare genetic conditions such as albinism and xeroderma pigmentosum
Symptoms
- Persistent dry lips and cracking of the lower lip
- Fine scale or flaking that returns after peeling
- Pale, white or grayish patches, sometimes mixed with red or brown areas
- A blurred border between the red part of the lip and the surrounding skin
- Thinning, wrinkling or swelling of the lip
- Rough, sandpaper-like texture
- Areas of crusting or small erosions
Signs that it may have become cancer
- A firm, raised or thickened area (induration)
- An ulcer that does not heal
- Bleeding, tenderness or rapid growth
Squamous cell carcinoma of the lip is more likely than skin cancer elsewhere to spread to lymph nodes, so early treatment matters.
Actinic cheilitis vs other lip conditions
| Condition | Key features |
|---|---|
| Actinic cheilitis | Chronic, mostly lower lip, scaly, pale, blurred lip line, sun-exposed adults |
| Chapped lips | Short-term, both lips, from cold or wind, heals with lip balm |
| Angular cheilitis | Cracks and redness at the corners of the mouth, often yeast |
| Cold sores | Tingling, then clustered blisters that crust and heal in 1 to 2 weeks |
| Contact cheilitis | Itchy, red, scaly lips after a new lip product or toothpaste |
| Lip cancer | Persistent lump, thickening or ulcer that bleeds |
Diagnosis
A dermatologist or dentist usually recognizes actinic cheilitis by looking at and feeling the lip. A biopsy, a small sample taken under local anesthetic, is recommended for any thickened, ulcerated or bleeding area, or for patches that do not respond to treatment, to rule out cancer. The doctor may also check the neck for enlarged lymph nodes.
Treatment
Treatment removes the damaged surface layer so healthier lip tissue can replace it. The same approaches are used for actinic keratosis on the skin.
- Topical creams: 5-fluorouracil or imiquimod applied for several weeks. They cause temporary redness, crusting and soreness before healing.
- Cryotherapy: freezing small, localized areas with liquid nitrogen.
- Photodynamic therapy: a light-sensitizing gel followed by light treatment.
- Laser ablation: a CO2 or erbium laser removes the damaged layer of the whole lip, with good cosmetic results.
- Vermilionectomy (lip shave): surgical removal of the red part of the lip, used for extensive disease or dysplasia. The lip lining is advanced to cover the area.
- Surgery for any confirmed cancer.
After treatment, regular checks are needed because new areas can develop.
Prevention
- Use a lip balm with SPF 30 or higher, and reapply every 2 hours outdoors and after eating or drinking.
- Wear a wide-brimmed hat that shades the lips.
- Avoid peak sun between 10 a.m. and 4 p.m. where possible.
- Stop smoking.
- Check your lips regularly, especially if you work outdoors. See skin cancer for other warning signs.
Frequently asked questions
Is actinic cheilitis cancer?
No, it is a precancerous condition. However, a minority of untreated cases progress to squamous cell carcinoma of the lip, often over years. Because it is hard to tell by eye which patches have changed, doctors biopsy thickened, ulcerated or bleeding areas and treat actinic cheilitis rather than just watching it.
Can actinic cheilitis go away on its own?
It rarely clears without treatment, especially while sun exposure continues. Strict sun protection may improve mild changes, but persistent scaling, pale patches or a blurred lip line usually need treatment with creams, freezing, laser or surgery.
What does actinic cheilitis look like?
It usually looks like a dry, scaly, rough lower lip with pale, white or blotchy areas, sometimes with fine cracks or crusts. The normally sharp line between the lip and the skin below becomes blurred. It persists despite lip balm.
How is actinic cheilitis treated?
Options include prescription creams (5-fluorouracil or imiquimod), freezing with liquid nitrogen, photodynamic therapy, laser resurfacing and surgical removal of the outer lip layer. The choice depends on how much of the lip is affected and whether a biopsy shows dysplasia.
Sources
This guide was written from current patient and clinical guidance, including:
- American Academy of Dermatology: Actinic keratosis
- Skin Cancer Foundation: Actinic keratosis and actinic cheilitis
- DermNet: Actinic cheilitis
- American Cancer Society: Lip and oral cavity cancer
- MedlinePlus (US National Library of Medicine): Actinic keratosis