Canine hyperadrenocorticism (Cushing's disease) is a common endocrine disorder in older dogs causing chronic cortisol excess that impairs quality of life and requires accurate diagnosis and careful long-term management.
Cushing's disease causes chronic physical and behavioural changes that affect daily quality of life. Excessive thirst and urination disrupt sleep and normal household routines. Muscle weakness and abdominal distension impair mobility and comfort. Increased appetite creates persistent food-seeking behaviour that can become distressing. Skin thinning and poor coat condition cause vulnerability to injury and infection. Untreated Cushing's disease causes progressive deterioration and increases the risk of serious secondary conditions including diabetes, hypertension, blood clots, and neurological signs from pituitary tumour growth. Medical management significantly improves quality of life but requires careful monitoring to avoid under- or over-treatment, both of which can cause serious harm.