Addison's disease (hypoadrenocorticism) is a life-threatening hormonal condition in dogs. With diagnosis and management, affected dogs can live full, comfortable lives.
Addison's disease causes significant welfare harm before diagnosis because its symptoms are episodic and mimic many other conditions - dogs may suffer repeated episodes of weakness, vomiting, and collapse over months before the underlying cause is identified. During Addisonian crises, dogs are in genuine physiological emergency with potential for rapid deterioration. The welfare significance of diagnosis is transformative: a dog that was experiencing repeated mysterious collapses becomes a stable, healthy animal with appropriate hormone replacement. The challenge is getting to diagnosis - the variety of presentations and the need for specific blood tests mean Addison's is frequently missed in initial workups. Veterinary awareness and thorough diagnostic investigation of dogs with waxing-waning illness dramatically improves outcomes.