The. The exact cause of melasma is still unknown, however researchers theorize that melasma occurs as a result of the color-making skin cells (melanocytes) producing too much color or melanin resulting in patchy discoloration. There are also genetic and other predispositions that are the cause. Common triggers of melasma include extended sun exposure, estrogen supplements, birth control pills, and pregnancy.
What causes melasma? My friend randomly developed a spot on her face that she says is called melasma. What causes this? .
Melasma . Melasma is a common acquired increase in pigmentation occuring exclusively in sun-exposed areas that is typically brownish in color. It tends to be prominent (but not exclusively) among latinos and asians, and more apparent during and after periods of sun exposure. It mostly arises from pregnancy (chloasma) and oral contraceptives, but can also be associated with endocrine dysfunction, genetic factors, certain medications, nutritional deficiencies, among other things. Read more...