Actinic Keratosis: The Skin Precancer You Shouldn't Ignore
That rough, scaly patch from years of sun isn't just dry skin — it's a fixable precancer, and treating it early can stop a squamous cell carcinoma before it starts.
An estimated 40-60% of squamous cell carcinomas begin as an untreated actinic keratosis — a rough, scaly precancerous patch caused by long-term sun exposure.
The Skin Cancer Foundation describes actinic keratoses as the earliest stage in the development of skin cancer, which is why dermatologists treat them rather than wait — addressing the precancer is far simpler than treating an invasive squamous cell carcinoma later.
Questions we get a lot
What is actinic keratosis and how serious is it?
Actinic keratosis is a rough, scaly patch that develops from years of sun exposure and is considered precancerous. The Skin Cancer Foundation notes that an estimated 40-60% of squamous cell carcinomas begin as an untreated actinic keratosis. Because it can progress, dermatologists generally treat these lesions rather than monitor them indefinitely.
How is actinic keratosis treated?
Common treatments include cryotherapy (freezing), topical medications, and field therapies for multiple lesions, with the goal of clearing the precancer before it can progress. Observational research shows treatment is a routine, effective part of dermatologic care. Early action is far simpler than treating an invasive cancer later.
r/SkincareAddiction: 'My dad has these rough sandpapery spots on his bald scalp the derm wants to freeze off — are actinic keratoses actually a big deal or routine?'