Abstract
A 34-year-old male presented CRPS (complex regional pain syndrome) type I of the right lower limb after a right knee operation. Initially, the pain considerably improved after continuous lumbar epidural block and lumbar sympathetic nerve block and drug therapy. But two months later, CRPS recurred. Because it seemed that the symptoms included a psychological factor, treatment was planned with psychiatric intervention. After successful psychiatric medication, his left hand represented phlegmonous change in association with purulent tendovaginitis. After incision drainage, extreme pain was experienced in the left upper limb, which showed resistance against various treatments, also diagnosed as multi-site CRPS type I. Because the patient showed a concomitant psychological symptom, we applied electroconvulsive therapy, which successfully reduced the pain and improved the activities of daily living.