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Lumpy Jaw (A. bovis)
Infectious DiseaseBacteriaBovineNew
Key Points
  • Lumpy jaw is a chronic bacterial osteomyelitis caused by Actinomyces bovis
  • Infection follows mucosal trauma as this allows bacteria to penetrate the tissue
  • The key clinical sign is a firm, fixed swelling on the mandible or maxilla, leading to dysphagia and inappetence
  • Diagnosis is mainly based on clinical presentation
  • Sodium iodide is a traditional therapy but can be combined with antibiotics and surgical debulking
  • Prevention is focused on minimising oral trauma and reducing exposure to sharp or abrasive feed
Differential Diagnoses
  1. Wooden tongue (Actinobacillus lignieresii)
  2. Tooth root abscess
  3. Osteosarcoma
Overview
Aetiology
Clinical Signs
Diagnosis
Treatment
Prevention
Resources
Overview

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Aetiology

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Clinical Signs

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Diagnosis

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Treatment

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Prevention

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Resources

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Educational content only. This factsheet is for general veterinary education and is not a substitute for professional veterinary advice, diagnosis, or treatment. Not for use in an emergency — contact a veterinarian or emergency service. Full disclaimer →