Basal cell carcinoma accounts for 80 percent of all skin cancers. The cause is damage to the DNA of cells in the epidermis, the top layer of the skin.
Lichen sclerosus is a rare skin disease that causes itchy and painful patches of thin, white, wrinkled-looking skin. Learn about symptoms and treatment.
Skin condition marked by intensely firm, itchy bumps
Squamous cell carcinoma is a cancer in the middle and outer skin layers caused by ultraviolet (UV) exposure. Learn about symptoms and treatment.
Photoaging is when the sun prematurely—and sometimes dangerously—ages the skin. Learn about symptoms and treatment.
Sarcoidosis is an inflammatory condition that affects the lungs, lymph nodes, and/or other tissues. Learn about symptoms and treatment.
Viral warts are viral infections of the skin that are most common on the hands and feet. Learn about symptoms and treatment.
Keloids are overgrowths of scar tissue that can sometimes appear when an injury heals. Learn about symptoms and treatment.
Acne is a skin condition characterized by pimples, blackheads, and whiteheads on the face, back, and chest. Learn about symptoms and treatment.
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.