Causalgia Home>Conditions_and_Diseases>Neurological_Disorders>Autonomic_Nervous_System>Complex_Regional_Pain_Syndromes>Causalgia     Web Pages An Excerpt on Causalgia Problems Dr. Scott Fried discusses this disorder along with the sympathetic nervous system. WebMD: Causalgia A brief description of this disorder. UCLA Neurosurgery | Pain Diseases & Disorders Details about causalgia, the causes, clinical findings, diagnosing and treatment. Interrupting the Sympathetic Outflow in Causalgia and Reflex Sympathetic Dystrophy An editorial from the British Midical Journal written by G.D. Schott.