Age spots, also known as liver spots or solar lentigines, are flat, brown, gray, or black spots that typically appear on areas of the skin that have been exposed to the sun over time. Despite the name “liver spots,” they are not caused by liver problems or aging of the liver.
These spots are caused by an excess production of melanin, the pigment that gives skin its color. Exposure to ultraviolet (UV) light from the sun or tanning beds stimulates the production of melanin, leading to the formation of age spots.
Age spots commonly appear on areas of the skin that receive the most sun exposure, such as the face, hands, shoulders, arms, and back. They are more common in older adults, but younger people can also develop them, especially with frequent sun exposure.