Skip to content
Hormones and metabolism

Addison's disease

Addison's disease is a condition in which the adrenal glands make too little of certain hormones that help the body cope with stress and keep its balance of salts and water. Its signs are vague and can come and go, so it is easy to miss. The condition can, however, suddenly worsen and become life-threatening, and then the dog needs a vet immediately.

Updated

5 breeds

What it is

The adrenal glands sit next to the kidneys. Among other things, they make cortisol, which helps the body handle stress, and aldosterone, which keeps the balance of sodium, potassium and water. In Addison's disease too little of these hormones is made; this can happen when the dog's own immune system damages the glands.

Without enough of these hormones, a dog copes poorly with anything that unsettles it: a journey, visitors, a change in routine. The signs can wax and wane for weeks or months, and between bad spells the dog may seem perfectly well.

Day to day, it helps to keep a short diary of when your dog seems off colour and what was happening at the time. A dog with this condition needs regular check-ups with a vet, and the people who look after it should know about the condition so they can spot a sudden decline in time.

Signs you may notice

You may notice a dog that becomes listless, eats less, vomits, has diarrhoea or loses weight, sometimes after a stressful event. If the dog collapses or becomes severely weak, don't wait: take it to a vet right away.

When to see a vet

If your dog collapses or suddenly becomes very weak, a vet is needed immediately. Vague signs such as tiredness, poor appetite or an upset stomach that keep coming back are worth booking a visit for.

This is general information, not veterinary advice. For your own dog's health, tests and treatment, see a vet.

More conditions: Hormones and metabolism

Also worth knowing for the same breeds

Conditions the same breed guides mention.