Melasma is a skin condition that causes patches and spots, usually on the face, which are darker than a persons natural skin tone. It is more common in women than men and is often called the "mask of pregnancy" because it frequently affects pregnant women. Melasma can be caused or worsened by sun exposure, hormonal changes, pregnancy, hormonal therapies, cosmetics, phototoxic drugs, and antiseizure medications. Women who have medium to dark skin tones are most likely to develop melasma. While melasma may go away on its own, it can also last for years. Dermatologists recommend treating melasma sooner rather than later, as it can be difficult to get noticeable results from treatment if youve had melasma for many years. Some treatments for melasma include topical skin lightening agents, chemical peels, laser treatments, and skin microneedling. It is important to note that melasma is not a form of skin cancer, though it may sometimes look like other skin conditions. If you have melasma, it is best to consult a dermatologist for diagnosis and treatment.