title: Polymyositis developing after prolonged injections of pentazocine.
abstract: Pentazocine is a frequently used analgesic drug. Numerous complications have been reported in association with its use, including skin fibrosis, skin ulceration, abnormal skin pigmentation and symmetrical myopathy. Fibrous myopathy is a rare but conspicuous complication of prolonged pentazocine injection. However, inflammatory myopathy has not previously been related to this substance abuse. We describe a patient who developed polymyositis after 13 months of pentazocine injections.
authors.affiliation: Department of Internal Medicine, Seoul National University College of Medicine, Korea.
authors.forename: H A
authors.initials: HA
authors.lastname: Kim
authors.forename: Y W
authors.initials: YW
authors.lastname: Song
mesh_terms: D015746:Abdominal Pain / Q000188:drug therapy; D000701:Analgesics, Opioid / Q000009:adverse effects* / Q000627:therapeutic use; D006801:Humans; D007273:Injections, Intramuscular; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010423:Pentazocine / Q000009:adverse effects* / Q000627:therapeutic use; D017285:Polymyositis / Q000139:chemically induced* / Q000175:diagnosis / Q000473:pathology; D013997:Time Factors
chemical_list: D000701:Analgesics, Opioid; D010423:Pentazocine