Hyperpigmentation is a common skin condition characterized by patches of skin that become darker in color than the surrounding skin. This occurs when there is an overproduction of melanin, the pigment responsible for skin color. Melanin is produced by melanocytes, specialized cells in the skin.
Several types of hyperpigmentation occur, including sun-induced (solar lentigines) also known as sunspots or age spots, post-inflammatory hyperpigmentation (PIH), or melasma. Hyperpigmentation is typically harmless from a medical standpoint, but it can be a source of cosmetic concern for many individuals. Treatment options vary depending on the type and severity of hyperpigmentation and may include topical treatments such as hydroquinone, retinoids, or chemical peels, as well as procedures like laser therapy or microdermabrasion.