Cushing's syndrome in dogs: what Singapore owners need to know

What Is Cushing's Syndrome and Why Does It Happen?

Cushing’s syndrome involves excessive exposure to cortisol, a hormone that normally has essential ongoing roles in the body as well as responding to stress. Naturally occurring disease commonly involves a pituitary tumour stimulating the adrenal glands, or an adrenal tumour producing cortisol. Long-term corticosteroid treatment can also cause a related syndrome. This is not simply a normal stress response, and diagnosis requires veterinary assessment. The MSD Veterinary Manual explains the causes and investigation.

Which Singapore Dogs Are Most at Risk?

Cushing’s is more often diagnosed in middle-aged and older dogs, with breed associations reported in studies abroad. That does not establish which breeds are most frequently affected in Singapore, where no local dataset is cited here. Any breed can be affected. Discuss new thirst, urination, skin or activity changes with your vet rather than using breed or age as a diagnosis.

How Do I Tell Cushing's Apart From Normal Ageing?

This is where Cushing's catches owners out. The early signs, a slower dog, a bit more sleep, a coat that is not quite as glossy, look exactly like ordinary ageing, and Singapore's warm, humid climate does not help: heavier panting can plausibly be blamed on the heat rather than the hormone. A few signs together are worth flagging with your vet rather than filing under "getting older". Watch for a dog drinking noticeably more water and needing to urinate more often, sometimes having accidents indoors for the first time in years. Watch for panting at rest, even in air-conditioning, not just after a walk. Watch for a pot belly that develops even though the dog is not eating more, this is muscle wasting pulling the abdominal wall out of shape, not simple weight gain. And watch the coat: thinning, dulling, sometimes symmetrical hair loss along the flanks, with skin that bruises or heals more slowly than it used to. Any one of these alone could be nothing. Several together, in an older small-breed dog, is a genuine reason to book a vet visit rather than wait it out.

How Is Cushing's Diagnosed at the Vet?

The vet combines clinical signs, medication history, blood and urine testing and selected hormonal tests. No single result should be interpreted in isolation. Abdominal ultrasound assesses the adrenal glands and other abdominal structures; it does not image the pituitary gland inside the skull. Specialist brain imaging may be relevant in selected cases. Your vet will choose tests and timing for the individual dog rather than promising a fixed number of visits.

What Does Daily Treatment and Monitoring Actually Look Like?

Trilostane is commonly used for Cushing’s, but dose, frequency and monitoring must be prescribed for the individual dog. Give it exactly as instructed and keep scheduled examinations and blood tests. Ask for written advice on what to do if the dog becomes unwell and whether to withhold the next dose while contacting the clinic. Budget for ongoing monitoring rather than assuming the medicine alone completes treatment.

What's the Outlook for a Dog on Treatment?

Many dogs gain useful quality of life with treatment, but the outlook varies with the cause, complications and other illnesses. Improvements in thirst or appetite may occur before coat or muscle changes. Cushing’s can have serious consequences, so it should not be described as rarely affecting lifespan or as merely a harmless background condition. Ask your vet how they will judge response and what changes require an urgent call.