Melasma
Melasma is a common skin condition characterized by dark, uneven patches on the skin. The condition often occurs on the face, especially on the cheeks, forehead, nose, and upper lip, but can also appear on other parts of the body that are exposed to sunlight.
Melasma can occur in individuals of all ages but is most commonly seen in women of childbearing age and during pregnancy due to hormonal changes. Other factors that can trigger melasma include exposure to sunlight, heat, and photosensitive medications.