title: Masticator myopathy.
abstract: A 31-year-old woman developed low-grade fever and pain and swelling of the masticatory muscles. A T2-weighted magnetic resonance image showed high signal intensity in these muscles. Coxsackie B3 and echo 30 viruses were detected from a nasopharyngeal swab and feces, respectively. The clinical symptoms accompanied a marked decline in the serum immunoglobulin G level with progressive eosinophilia. Her symptoms disappeared by 8 weeks after onset. She was diagnosed as having masticator myopathy, which has rarely been reported in humans. The present case suggests that masticator myopathy is associated with coxsackie or echo virus infection.
authors.affiliation: Department of Neurology, Kohnodai Hospital, Kohnodai 1-7-1, Ichikawa-shi, Chiba 272-8516, Japan. lives@oak.dti.ne.jp
authors.forename: Shigeo
authors.initials: S
authors.lastname: Yamada
authors.forename: Tomoko
authors.initials: T
authors.lastname: Ogawa
authors.forename: Jin
authors.initials: J
authors.lastname: Nishimiya
authors.forename: Tatsuhiko
authors.initials: T
authors.lastname: Yuasa
authors.forename: Fumitoshi
authors.initials: F
authors.lastname: Taketazu
mesh_terms: D000328:Adult; D003384:Coxsackievirus Infections / Q000150:complications / Q000473:pathology / Q000821:virology; D004457:Echovirus Infections / Q000150:complications / Q000473:pathology / Q000821:virology; D005243:Feces / Q000821:virology; D005334:Fever / Q000209:etiology; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D008279:Magnetic Resonance Imaging; D008297:Male; D008410:Masticatory Muscles / Q000473:pathology*; D009135:Muscular Diseases / Q000188:drug therapy / Q000473:pathology* / Q000821:virology; D009305:Nasopharynx / Q000821:virology; D010447:Peptide Hydrolases / Q000627:therapeutic use
chemical_list: D007074:Immunoglobulin G; D010447:Peptide Hydrolases; C022640:serratiopeptidase