Dr. Richard Besser moderated this chat focusing on chronic pain. NIAMS posted tweets highlighting the Institute’s health information and research in diseases that cause chronic pain, including fibromyalgia, various forms of arthritis, back pain, and lupus. The NINDS and the National Institute of Dental and Craniofacial Research (NIDCR) also participated in the chat. Using the hashtag #abcDrBchat, the chat reached an estimated total audience of more than 900,000 Twitter users, with over 41 million impressions. No archive of this chat is available.