Energy-based device treatment of melasma: An update and review of the literature.

Melasma is an acquired pigmentary disorder commonly seen in sun-exposed areas. Predominantly affecting women of childbearing age, melasma can be difficult to treat for many patients. A variety of options currently exist; however, definitive treatment remains elusive.

A cross-sectional survey on knowledge and perceptions of health risks associated with arsenic and mercury contamination from artisanal gold mining in Tanzania.

Background: An estimated 0.5 to 1.5 million informal miners, of whom 30-50% are women, rely on artisanal mining for their livelihood in Tanzania.