Causes
The main cause of actinic keratosis is long‑term exposure to UV radiation from the sun or tanning beds, which gradually damages skin cells. Fair skin, older age, weakened immunity, and certain chemicals or radiation further increase the risk.
Serious & Cancer-related
Sun damage spots
Actinic keratosis
Risk Level: High Risk
Frequency
Common
Age Group
Adults & Elderly
Progression
Chronic
Contagious
No
Actinic keratosis is a rough, scaly patch on sun‑exposed skin caused by long‑term UV damage. It’s considered a precancerous change because a small portion can turn into squamous cell carcinoma over time, so regular checks and often treatment are recommended.
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Risk Factors
Actinic keratosis is a precancerous condition, and a proportion of lesions can turn into squamous cell carcinoma over time. Having many or thick, inflamed lesions also signals a higher general risk of skin cancer in the surrounding sun‑damaged skin.
Treatment
Treatment usually combines strong sun protection with removing or destroying the damaged spots using methods like freezing, laser, creams, or photodynamic therapy. The exact choice depends on how many lesions you have, how they look, and whether cancer is suspected, which may require a biopsy or surgical removal.
Medical Disclaimer
The information provided here is for educational purposes only and does not replace professional medical advice. Always consult a dermatologist or physician if you have any concerns.
Related Conditions
Serious & Cancer-related
High RiskLentigo melanoma
Lentigo melanoma is a type of melanoma that usually develops on sun‑damaged skin of the face in older adults, often on top of a long‑standing flat brown patch called lentigo maligna (Dubreuilh melanosis). It tends to grow slowly on the surface for years, but once it starts growing deeper it becomes aggressive, can spread to lymph nodes and internal organs, and always needs prompt specialist treatment.
Serious & Cancer-related
High RiskSkin melanoma
Melanoma is an aggressive skin cancer that develops from pigment-producing cells called melanocytes. It most often appears on the skin but can also occur on the eye, mucous membranes, or under the nails. Early detection and complete surgical removal greatly improve the chances of cure.
Serious & Cancer-related
High Risk