Complex Regional Pain Syndrome Type I Induced by Pacemaker Implantation, with a Good Response to Steroids and Neurotropin.

An 84-year-old woman was referred to our hospital because of aches and pain in her left hand and foot. Three months before her symptoms occurred, a pacemaker had been implanted for the treatment of a 2:1 atrioventricular block with bradycardia. In an X-ray examination, prominently decreased bone density was noted in her left fingers and toes. She was diagnosed to have CRPS-I, which was considered to have been induced by the pacemaker implantation. After treatment with methylprednisolone and Neurotropin, her symptoms dramatically improved.