Fact Sheets

Photoaging (Sun Damage)
Photoaging is when the sun prematurely—and sometimes dangerously—ages the skin. Learn about symptoms and treatment.
Actinic Keratosis (AK)
Actinic keratosis (AK) is a scaly and rough patch of skin caused by years of sun damage. Learn about symptoms and treatment.
Excessive Sweating (Hyperhidrosis)
Hyperhidrosis refers to excessive perspiration that can get in the way of daily life and cause skin infections. Learn about symptoms and treatment.
Allergic Contact Dermatitis
Allergic contact dermatitis is the skin's reaction to an irritant—anything from poison ivy to certain fabrics can cause your skin to flare. Learn about symptoms and treatment.
Shingles
Shingles is a painful, blistering skin rash caused by the virus that causes chickenpox. Learn about symptoms and treatment.
Keloids
Keloids are overgrowths of scar tissue that can sometimes appear when an injury heals. Learn about symptoms and treatment.
Seborrheic Keratosis
A common type of noncancerous skin tumor that resembles a wart and may bleed or be itchy.
Lichen Sclerosus
Lichen sclerosus is a rare skin disease that causes itchy and painful patches of thin, white, wrinkled-looking skin. Learn about symptoms and treatment.
Lichen Planus
Lichen planus is an inflammatory disease that can affect the skin, mouth, nails, genitals, and scalp. Learn about symptoms and treatment.
Skin Cancer
A disease caused by ultraviolet light that comes from the sun’s rays.