The subject was a 51-year old woman. Extraction was enforced for left L5/S1 extraforaminal lumber disc herniation on October 30, 2001. Remission and the postoperative course of symptoms were excellent. Tumescence, hyposensitivity of lower left thigh, numbness, and low temperature appeared around December 2001, and dropfoot also recurred. She was hospitalized in our department for close examination on May 23, 2002 due to aggravation of symptoms. Tumescence of dysesthesia below both the dominant lower left thigh and lower left thigh, tone changes, and low temperature were seen. On hospitalization, muscle weakness was eminent and gait difficulty was found. No clear dyschromatopsia congenitia information could be obtained in MRI and EMG study. Skin temperature problems, vasomotor disturbance, and Sudecks atrophy were found and treated with original and other medications for the CRPS type II (causalgia RSD) diagnosed. Ketamine drip, epidural block, and lumbar sympathetic ganglia block were performed although the therapeutic effect was slight, The treatment was carried out through cooperation between the departments of this hospital, pain clinic, etc. The patients symptoms alleviated, he was able to walk again and leave the hospital. It has been reported that in some rare cases, treatment is very difficult due mainly to the amalgamating CRPS of the intervertebral disc affected by lumbar vertebra herniation. This report discusses a case of CRPS amalgamating with a very rare intervertebral disc of the lumbar vertebra outside herniation. The case is discussed taking into consideration other related references.