Canine Cushing's Disease: Welfare and Quality of Life

A welfare-focused guide to hyperadrenocorticism (Cushing's disease) in dogs, including recognition, treatment options, and quality of life management.

Key Facts

Hyperadrenocorticism (Cushing's disease) affects an estimated 1-2 per 1,000 dogs annually — it is most common in middle-aged to older dogs, with Poodles, Dachshunds, and Boxers over-represented.
Cushing's causes chronic elevated cortisol, producing: pot-bellied appearance, excessive thirst and urination, hair loss, muscle weakness, and increased infection risk.
The disease causes significant suffering through chronic fatigue, insatiable thirst, skin fragility, and increased risk of life-threatening infections and diabetes.
Pituitary-dependent Cushing's (PDH) accounts for 80-85% of cases — trilostane (Vetoryl) is the first-line medical treatment that reduces cortisol production effectively.
Adrenal-dependent Cushing's (adrenal tumor) may be treated surgically — adrenalectomy offers potential cure but carries significant surgical risk.
Quality of life monitoring on trilostane therapy requires regular ACTH stimulation testing, clinical reassessment, and owner vigilance for Addisonian crisis (under-treatment emergency).
Well-managed Cushing's dogs can have good quality of life for years — but undertreated or undiagnosed cases suffer significantly from the effects of chronic hypercortisolism.

Welfare Considerations

Cushing's disease causes real chronic suffering — the excessive thirst, fatigue, muscle weakness, and skin problems of undiagnosed or poorly managed Cushing's significantly reduce quality of life. Early diagnosis and appropriate medical management allow most dogs to return to comfortable, active lives. Annual wellness blood panels in dogs over 7 years help detect early Cushing's before signs are severe.

What You Can Do

Include urine cortisol:creatinine ratio or LDDST in wellness panels for dogs over 7 with relevant clinical signs
Begin trilostane therapy promptly once Cushing's is diagnosed — delays worsen welfare outcomes
Monitor dogs on trilostane carefully with regular ACTH stimulation tests every 4-8 weeks initially
Learn to recognize Addisonian crisis signs (weakness, collapse, vomiting) as an emergency requiring immediate vet care