Archive Case #47: Canine Hypoadrenocorticism

Clinical Clues

1. A dog is presented for episodic vomiting, weakness, and collapse that seem to improve temporarily with supportive care before returning.
2. The owner says the episodes have become more frequent over the past several weeks.
3. On examination the dog is dull, dehydrated, and more bradycardic than expected for its level of illness.
4. Serum biochemistry shows marked hyponatraemia with concurrent hyperkalaemia.
5. Baseline cortisol is low and ACTH stimulation testing confirms inadequate adrenal response.
6. Failure of the adrenal cortex to produce sufficient hormones can cause intermittent gastrointestinal signs, weakness, and electrolyte derangement.

Diagnosis

Canine Hypoadrenocorticism

This case is most consistent with Canine Hypoadrenocorticism because the dog has waxing and waning collapse with classic sodium and potassium abnormalities and confirmatory endocrine testing. The most important clues are the inappropriate bradycardia, electrolyte pattern, and ACTH result, which make routine gastroenteritis far less likely.

Educational Use

Vetdle archive cases are educational veterinary games for diagnostic reasoning practice. They do not provide veterinary advice, diagnosis, treatment, or professional medical guidance.