Understanding Addison’s Disease in Pets: What Every Pet Owner Should Know
By Lakeshore Road Animal Hospital

At Lakeshore Road Animal Hospital, we believe that informed pet owners make the best decisions for their furry family members. One condition we’d like to shine a light on is Addison’s Disease—also known as hypoadrenocorticism. While it’s not very common, it’s important to recognize because, when left untreated, it can become life-threatening.

What Is Addison’s Disease?

Addison’s Disease occurs when your pet’s adrenal glands (small glands near the kidneys) don’t produce enough important hormones—specifically cortisol and sometimes aldosterone. These hormones help regulate everything from metabolism and blood pressure to the body’s response to stress.

Who Is at Risk?

This condition is most often seen in young to middle-aged dogs, though it can affect cats (rarely). Certain breeds like Standard Poodles, Portuguese Water Dogs, and Labrador Retrievers may be more at risk, but it can happen to any dog.

Symptoms to Watch For

The tricky part about Addison’s is that the symptoms can be vague and come and go. They often look like many other illnesses, which can delay diagnosis. Signs may include:

• Lethargy or weakness
• Vomiting or diarrhea
• Loss of appetite
• Shaking or muscle tremors
• Weight loss
• Increased thirst or urination
• Collapse, especially during times of stress

Sometimes a pet will seem “off” for a while and then suddenly crash—this is called an Addisonian crisis and is a medical emergency.

How Is It Diagnosed?

If we suspect Addison’s, we’ll start with blood work and possibly an ACTH stimulation test to see how your pet’s adrenal glands are functioning. Electrolyte imbalances (like high potassium and low sodium) can be a big clue.

What’s the Treatment?

The good news? Addison’s is very manageable with proper care. Pets are usually treated with hormone replacement therapy—either daily pills or monthly injections. With consistent treatment and regular monitoring, most pets go on to live full, happy lives.

Final Thoughts

While Addison’s Disease can sound scary, early diagnosis and treatment make a huge difference. If your dog has been showing vague signs of illness that come and go, or has had a sudden collapse, it’s worth checking in with us.

At Lakeshore Road Animal Hospital, we’re always here to help you get the answers your pet needs. If you have any concerns or questions, don’t hesitate to give us a call—we’re just around the corner and ready to help.