Melasma is most common in women 20-50 years of age. Over 90% of those with melasma are women. – MedicineNet
WHAT IT IS: Melasma is a common skin problem. It causes brown to gray-brown patches on the face. Most people get it on their cheeks, bridge of their nose, forehead, chin, and above their upper lip. It also can appear on other parts of the body that gets a lot of sun, such as the forearms and neck. People with darker skin, such as those of Latin/Hispanic, North African, African-American, Asian, Indian, Middle Eastern, and Mediterranean descent are more likely to get melasma.