Chronic Arsenicism From Chinese Herbal Medicine (See Erratum 2008;4:354)

Chronic arsenicism is associated with cutaneous manifestations, including palmoplantar keratoses, pigmentary anomalies, and nonmelanoma skin cancer. It occurs most commonly following exposure to inorganic arsenic in contaminated drinking water or occupational contact, though medicinal exposure also has been reported. We present a case of a Chinese woman living in the United States with cutaneous manifestations of chronic arsenicism due to a 5-year history of Chinese herbal medicine ingestion.