What Causes Light Brown Spots on the Stomach?

Solar lentigines, called liver spots or age spots by some, generally form from sun exposure. They appear on the face and hands most often. Melasma or chloasma form from hormonal changes. Melasma is a common skin condition.

Wearing sunscreen and clothing that offers protection from the sun prevents the formation of many types of hyperpigmentation. A dermatologist should check any skin changes for a specific diagnosis.