What is the term for overproduction of pigment?

The term for overproduction of pigment is hyperpigmentation. This condition occurs when the skin produces excessive amounts of melanin, the pigment responsible for skin color. Hyperpigmentation can present itself in various forms, such as dark spots, uneven skin tone, or patches that appear darker than the surrounding skin. It can be caused by various factors, including sun exposure, hormonal changes, certain medications, or skin injuries.

Other terms listed do not refer to overproduction of pigment. Hypopigmentation describes a lack of pigment, resulting in lighter patches on the skin. Melasma and chloasma are specific types of hyperpigmentation often associated with hormonal changes, such as during pregnancy or with contraceptive use, but they are not general terms for the condition of increased pigmentation. Hyperpigmentation encompasses a broader range of conditions and is the accurate term for overproduction of pigment.