AAD Photoprotection Guidelines

Overview / Definition Photoprotection refers to strategies and practices designed to protect the skin from the harmful effects of ultraviolet (UV) radiation. This includes both UVB and UVA rays, which can lead to acute and chronic skin damage, including sunburn, skin cancer, and photoaging. Epidemiology Skin cancer is the most common form of cancer in the United States, with over 5 million cases diagnosed each year. The incidence of melanoma, the deadliest form of skin cancer, has been rising steadily. Key statistics include: 1 in 5 Americans will develop skin cancer by age 70. Melanoma rates have increased by 2% annually over the past decade. Individuals with light skin, a history of sunburns, or a family history of skin cancer are at higher risk. Pathophysiology / Mechanism UV radiation induces DNA damage in skin cells, leading to mutations that can result in cancer. The skin's response to UV exposure can include: Inflammation and erythema (sunburn) due to direct DNA damage. Delayed pigmentary response (tanning) as a protective mechanism. Immune suppression, which may facilitate tumor development. Clinical Presentation Sun damage manifests in various forms, including: Acute: Redness, swelling, and pain from sunburn. Chronic: Photoaging characterized by wrinkles, solar lentigines (age spots), and actinic keratosis. Skin cancer: Nonmelanoma skin cancers (basal cell carcinoma, squamous cell carcinoma) and melanoma. Diagnosis / Workup Diagnosis of skin damage due to UV exposure may involve: Clinical examination of sun-exposed areas. Biopsy for suspicious lesions to rule out malignancy. Use of dermatoscopy to evaluate skin lesions. Treatment / Management Management of photoprotection includes both preventive and therapeutic strategies: Behavioral modifications: Avoiding sun exposure during peak hours (10 AM - 4 PM). Physical barriers: Wearing protective clothing, wide-brimmed hats, and sunglasses. Topical sunscreens: Broad-spectrum sunscreens with SPF 30 or higher shou