It is embarrassing, watching those brown spots, huge 'freckles' and other signs of aging appear on your hands, arms and even your face.‚ ‚ Age spots, also known as sun spots, liver spots, lentigos, or lentigines, are flat, tan, brown, or dark brown spots on sun-exposed skin. As people grow older, sun spots most commonly appear on the backs of the hands, the forearms, neck,...