Age spots are due more to sunning than aging. These spots—also called sunspots, brown spots or liver spots—are flat, uneven dark patches on the face, neck, chest, hands and arms and other areas that are regularly exposed to the sun. Though usually harmless, these blotchy brownish patches can make you look and feel older than you really are.
In the sun, your body reacts by producing a pigment called melanin to protect your skin from ultraviolet rays. If you spend a lot of time in the sun, your skin may overreact by producing too much melanin. That increased pigmentation can result in age spots, which fall into a broad medical category called "pigmented lesions."