Silas Weir Mitchell (February 15, 1829 - January 4, 1914) was an American physician and writer known for his discovery of causalgia (complex regional pain syndrome) and erythromelalgia..Silas Weir Mitchell was born on February 15, 1829 in Philadelphia, Pennsylvania to John Kearsley Mitchell and Sarah Henry Mitchell.He studied at the University of Pennsylvania in that city, and received the degree of MD at Jefferson Medical College in 1850. During the Civil War he had charge of nervous injuries and maladies at Turners Lane Hospital, Philadelphia, and at the close of the war became a specialist in neurology. In this field Mitchell's name became prominently associated with his introduction of the rest cure, subsequently taken up by the medical world, for nervous diseases, particularly neurasthenia and hysteria.[1] The treatment consisted primarily in isolation, confinement to bed, dieting, electrotherapy and massage; and was popularly known as 'Dr Diet and Dr Quiet'. His medical texts include Injuries of Nerves and Their Consequences (1872) and Fat and Blood (1877). Mitchell's disease (erythromelalgia) is named after him. He also coined the term phantom limb during his study of an amputee