The signs of Addison’s can develop quickly, usually over a few days or insidiously over a period of months. Most owners notice that their pet develops several problems including;
- Reduced appetite
- Lethargy and weakness
- Weight loss
In severe cases some dogs will suddenly collapse and develop clinical signs of shock.
Although Addison’s is not very common, it occurs most frequently in young to middle-aged female dogs. It is considered rare in cats, however it has been diagnosed in dogs and cats of all ages and of either sex (including neutered animals of both sexes). Breeds that appear to be predisposed to Addison’s include Portuguese Water Dogs, Standard Poodles and Bearded Collies, although it can affect any breed and also crossbred dogs.