• Young Deog Cha, Chun Woo Yang, Jung Uk Han, Jang Ho Song, WonJu Na, Sora Oh, and Byung-Gun Kim.
• Department of Anesthesiology and Pain Medicine, Inha University School of Medicine, Inha University Hospital, Incheon, South Korea.
• Medicine (Baltimore). 2016 Sep 1; 95 (39): e5010e5010.

BackgroundCoccygodynia is a pain in the region of the coccyx that radiates to the sacral, perineal area. The cause of the pain is often unknown. Coccygodynia is diagnosed through the patient's past history, a physical examination, and dynamic radiographic study, but the injection of local anesthetics or a diagnostic nerve blockade are needed to distinguish between somatic, neuropathic, and combined pain. Ganglion impar is a single retroperitoneal structure made of both paravertebral sympathetic ganglions. Although there are no standard guidelines for the treatment of coccygodynia, ganglion impar blockade is one of the effective options for treatment.MethodsHere, we report a 42-year-old female patient presenting with severe pain in the coccygeal area after spinal arachnoid cyst removal.ResultsTreatment involved neurolysis with absolute alcohol on the ganglion impar through the transsacrococcygeal junction. Pain was relieved without any complications.ConclusionOur case report offers the ganglion impar blockade using the transsacrococcygeal approach with absolute alcohol can improve intractable coccydynia.

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