Actinic or Solar Keratoses What it is:
A fourth type of growth, actinic or solar keratoses, is a concern because it can progress into cancer. Actinic keratoses are considered the earliest stage in the development of skin cancer, and are caused by long-term exposure to sunlight. They are the most common pre-malignant skin condition, occurring in more than 5 million Americans each year.
Actinic or solar keratoses share some of the symptoms of skin cancer. Look for raised, rough-textured, or scaly bumps that occur in areas that have been sunburned or tanned.
Most cases of actinic keratoses are easily treated in a dermatologist’s office by removing them with liquid nitrogen or chemical peels.
The Bottom Line:
Actinic or solar keratoses are the most common pre-malignant skin condition. Check with your doctor if you find any suspicious-looking bumps.