NIAMS: Stands for National Institute of Arthritis and Musculoskeletal and Skin Diseases, one of the National Institutes of Health in the U.S. NIAMS's mission is "conduct and support a broad spectrum of research on normal structure and function of bones, muscles, and skin, as well as the numerous and disparate diseases that affect these tissues. NIAMS also conducts research training and epidemiologic studies and disseminates information."