Brown spots, also called age spots and liver spots, are flat brown patches on the skin that have darkened in color (“pigmented”) after exposure to sunlight or ultraviolet light. They are commonly seen in people over the age of 40 on areas of skin that are frequently exposed to sunlight, such as the hands, shoulders, forearms, face and forehead. Age spots may look unattractive, but age spots are painless and harmless, although their dark color can delay the diagnosis of some skin cancers.