Age Spots, Sun Spots and Dark Spots
Age spots are also known as sun spots, liver spots, or solar lentigines. They are small, flat, round spots on the skin that begin to appear later in life on sun-exposed areas. They are particularly common on the face, neck, arms and backs of the hands, usually sparing the knuckles.
Age spots are thought to be caused by years of sunlight exposure. The sun damages the pigment-producing cells in the skin (melanocytes), causing them to over-produce pigment in sun-exposed areas. The age spots may increase in size over time and sometimes join together to create larger spots.
They may also resemble freckles, but are typically darker and have a more consistent color throughout.