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.
Vitiligo is a disease that causes patches of skin to lose their color, resulting in white spots. Learn about causes and treatment.
Squamous cell carcinoma is a cancer in the middle and outer skin layers caused by ultraviolet (UV) exposure. Learn about symptoms and treatment.
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
Sarcoidosis is an inflammatory condition that affects the lungs, lymph nodes, and/or other tissues. Learn about symptoms and treatment.
Keloids are overgrowths of scar tissue that can sometimes appear when an injury heals. Learn about symptoms and treatment.
Photoaging is when the sun prematurely—and sometimes dangerously—ages the skin. 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.
Psoriasis is a common skin disorder that causes raised plaques of itchy, red skin. Learn about symptoms and treatment.