Detailed answer

Melasma, a skin condition characterized by dark patches on the skin, can lead to an increase in skin oiliness in some cases. This is because melasma is often associated with hormonal changes, such as during pregnancy or as a side effect of certain medications. These hormonal fluctuations can trigger an overproduction of sebum, the oily substance produced by the skin. Excess sebum can contribute to a greasy appearance and may worsen the appearance of melasma patches. However, it's important to note that not everyone with melasma will experience changes in skin oiliness, as individual responses can vary.