Herpes zoster has been rarely associated with somatic and visceral motor complications, including facial palsy, segmental motor paralysis of extremity, abdominal muscle weakness, neurogenic bladder dysfunction, and pseudo-obstruction. We report a case of unilateral abdominal distention due to muscle weakness after thoracic herpes zoster. The unnecessary tests and treatments for similar cases could be avoided with awareness of possibility of post-zoster motor weakness. (Korean J Dermatol 2000;38(4)：537~539)