- Actinic Keratosis - An overview of the causes and symptoms is illustrated by close-up photographs of the condition.
- eMedicine: Actinic Keratosis - Describes the risk factors, appearance, pathology, treatments, and possible outcomes. Includes photographs of treated and untreated lesions.
- Healthopedia.com: Actinic Keratosis - A detailed explanation covering symptoms, diagnosis, management, and outcomes. Includes discussion of the possible side effects of treatment, as well as the consequences of leaving them untreated.
- Solar Keratosis - An outline of the condition and the need for treatment, with a link to a series of photographs.
- Solar Keratosis - Patient fact sheet explains causes, appearance, diagnosis, risks, and treatment.
- Sun Damage - Explains how pre-cancerous lesions develop, their risk factors and treatment, and includes photographs of these and similar conditions.
