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Acute Haemorrhagic Diarrhoea Syndrome (AHDS)
GastrointestinalBacteriaCanineNew
Key Points
  • Acute haemorrhagic diarrhoea syndrome (AHDS) is an acute gastrointestinal syndrome, characterised by haemorrhagic diarrhoea often alongside vomiting
  • Mainly seen in dogs, especially toy and small breeds (e.g. Yorkshire Terriers, Miniature Schnauzers, Maltese)
  • Strongly associated with intestinal dysbiosis, an overgrowth of Clostridium perfringens type A bacteria and overproduction of netF toxin
    • Not all cases test positive for Clostridial bacteria
  • Diagnosis is based on clinical presentation and exclusion of differentials
  • Aggressive fluid therapy and supportive care are the mainstays of treatment
  • Prevention focuses on minimising stress and avoiding unnecessary antibiotics
Differential Diagnoses
  1. Canine Parvovirus
  2. Gasotrointestinal obstruction
  3. Infectious enterocolitis
  4. Addison’s (hypoadrenocorticism)
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 →