Interrupting the Sympathetic Outflow in Causalgia and Reflex Sympathetic Dystrophy: An editorial from the British Medical Journal written by G.D. Schott.
MedlinePlus: Complex Regional Pain Syndrome: Information, resources and links for disorder includes financial issues, clinical trials, overview, and organizations.
National Institute of Neurological Disorders and Stroke: Complex Regional Pain Syndrome: Condition commonly referred to as Causalgia and Reflex Sympathetic Dystrophy Syndrome. Provides information, description, and resources.