Atypical masticatory muscle myositis in three cavalier King Charles spaniel littermates

G D C Pitcher, C N Hahn

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

This case report describes a novel manifestation of the immune-mediated disease, masticatory muscle myositis. Clinical signs, including difficulty in opening the mouth (trismus), were seen in three of four 12-week-old cavalier King Charles spaniel littermates. Diagnosis was established by 2M immunohistochemistry, supported by characteristic histopathological changes in affected temporal muscle. Treatment using corticosteroids at immune-modifying doses resulted in resolution of clinical signs in all the affected animals. Masticatory muscle myositis should be considered as a differential diagnosis in groups of young dogs with clinical signs of myositis localised to the head.
Original languageEnglish
Pages (from-to)226-8
Number of pages3
JournalJournal of Small Animal Practice
Issue number4
Publication statusPublished - Apr 2007

Keywords / Materials (for Non-textual outputs)

  • Adrenal Cortex Hormones
  • Animals
  • Diagnosis, Differential
  • Dog Diseases
  • Dogs
  • Immunohistochemistry
  • Male
  • Masticatory Muscles
  • Myositis
  • Treatment Outcome
  • Trismus


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