Cushing’s disease is a hormonal condition that is relatively common in middle-aged or older dogs. Read our guide to find out what it is, what’s causing it and how you can care for a dog that has been diagnosed with the disease.
Your dog’s energy levels are likely to decrease as they get older, but did you know that this could point to something other than old age? In some cases, this is one of the signs of a disease known as Cushing’s Syndrome in dogs. Here is what you need to know.
What is Cushing’s disease in dogs?
Cushing’s disease, also known as hyperadrenocorticism, is more common in dogs over 7 years of age. The disease involves excess production of cortisol, a naturally produced steroid that is often referred to as the stress hormone. Certain levels of this hormone within the body are important and contribute to functions such as the immune system or ‘fight or flight’ response. However, the abnormally high levels seen in Cushing’s causes an imbalance of hormone regulation within the body and leads to the symptoms associated with the disease.
The most common cause of Cushing’s disease in dogs is a benign tumour of the pituitary gland, a structure that is located in the brain. The pituitary gland sends messages to the adrenal glands to produce cortisol. In cases of pituitary-dependant Cushing’s disease, these messages continue to be sent to the adrenal glands even if there is already enough cortisol, leading to higher levels in the body.
Less commonly, Cushing’s disease can be caused by tumours of the adrenal glands themselves, this is adrenal-dependent disease. It can also occur if a pet is receiving high doses of steroid treatment for a different medical condition.
Symptoms of Cushing’s in dogs?
Cushing’s in dogs will often go unnoticed for a while, and tends to progress very gradually. Because the disease affects middle-aged and senior dogs, the symptoms are often attributed to ageing at first.
Cortisol is a vital hormone for different functions and organs, meaning that it acts in various ways around the body. Therefore, increased production of the hormone can affect a number of different body systems, and result in various symptoms many of which are non-specific. The list of symptoms of Cushing’s in dogs will differ between individuals and you should consult the vet even if you don’t notice all the signs listed below.