Motor cortex stimulation in a patient with intractable complex regional pain syndrome type II with hemibody involvement. Case report.
The authors describe the effectiveness of motor cortex stimulation (MCS) in a patient with complex regional pain syndrome (CRPS) Type II, formerly known as causalgia, with hemibody allodynia. During MCS, a subjective sensation of warm paresthesia developed in the painful hand and forearm and spread toward the trunk. Pain and allodynia in the areas associated with this sensation were alleviated significantly. The analgesic effect of stimulation proved to be long lasting and was still present at the 12-month follow up. The authors speculate that MCS might exert its effect through the modulation of thalamic activity in this particular case of CRPS with hemisensory deficit. A central mechanism associated with functional disturbance in noxious-event processing in the thalamus might have an important role in the pathogenesis of the condition.
Son
Ung Chul
UC
Department of Neurosurgery, Kangnam St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. sbc@cmc.cuk.ac.kr
Kim
Moon Chan
MC
Moon
Dong Eon
DE
Kang
Joon Ki
JK
D000328:Adult; D002422:Causalgia / Q000150:complications / Q000503:physiopathology* / Q000628:therapy*; D004599:Electric Stimulation Therapy; D006801:Humans; D008297:Male; D009044:Motor Cortex / Q000503:physiopathology*; D020886:Somatosensory Disorders / Q000209:etiology / Q000503:physiopathology* / Q000628:therapy*