National Institute of Neurological Disorders and Stroke complex regional pain syndrome National Institute of Neurological Disorders and Stroke Complex Regional Pain Syndrome (CRPS) National Institute of Neurological Disorders and Stroke National Institute of Health National Institute of Neurological Disorders and Stroke Complex Regional Pain Syndrome, or CRPS Complex Regional Pain Syndrome, or CRPS Reflex Sympathetic Dystrophy reflex sympathetic dystrophy National Institute of Neurological Disorders and Stroke Reflex Sympathetic Dystrophy Syndrome National Institute of Neurological Disorders