Knowing when to call your veterinarian, what information to bring, and what follow-up may involve can help you navigate Addison’s in dogs. This adrenal disorder can cause changes that are easy to mistake for an ordinary upset stomach, so a pattern over time matters as much as any single episode.
A dog may have a poor appetite one week and seem more like their usual self the next. Keeping a record of those changes gives your veterinarian a clearer picture of what happened before the appointment and helps you discuss what testing might be appropriate.
Addisons disease in dogs: What happens in the body?
The two adrenal glands sit near the kidneys. Their outer layer, the adrenal cortex, produces hormones that help the body respond to stress and maintain normal fluid and mineral balance. Cortisol supports several processes, including metabolism and the response to stress. Aldosterone helps regulate sodium and potassium, which in turn affect hydration, blood pressure, and other vital functions.
With Addisons in dogs, the adrenal glands do not make enough of these hormones. Many affected dogs lack both cortisol and aldosterone, while others initially have a cortisol deficiency without the characteristic electrolyte changes. The distinction matters because your veterinarian will choose tests and follow-up based on the individual findings.
For Addisons disease in dogs, the medical term is hypoadrenocorticism. In most cases the problem begins in the adrenal glands themselves; less commonly, it relates to the signals that normally stimulate them. Damage associated with certain medicines can also be a cause. Your veterinarian will consider your dog’s history when interpreting the results.
Changes you might notice at home
With Addisons disease, dogs can show signs that include reduced appetite, vomiting, diarrhea, low energy, weakness, and weight loss. Some dogs drink or urinate more than usual. These changes can be mild or intermittent, and they also occur with many other conditions. A list of signs cannot establish a diagnosis.
For dogs with Addison’s, a record of appetite, energy, stool, and vomiting can help the veterinary team see a pattern. Note when each change started, how long it lasted, and whether your dog returned to normal between episodes. Mention any recent illness, medications, and stressful events, such as boarding or travel. Bring a list of current and recent medications, including products obtained without a prescription.
To track Addisons in dogs, record the good days between episodes alongside the difficult days. Your notes can help your veterinarian decide what to investigate and give you both a baseline for comparing changes later.
When to seek urgent help
A sudden collapse, profound weakness, or severe illness calls for immediate veterinary attention. An Addisonian crisis can involve shock and dangerous disturbances in fluid and mineral balance. Call an emergency veterinary clinic while you arrange transport, and tell the team about any known diagnosis, medications, and recent symptoms. Do not wait for a routine appointment to see whether a collapsed or severely weak dog improves.
At the clinic, the team will assess circulation and provide emergency care as needed. According to the Merck Veterinary Manual, an Addisonian crisis requires prompt treatment, including intravenous fluids and close monitoring. Other emergencies can look similar, so the team will assess the whole situation while stabilizing the dog.
How veterinarians confirm the diagnosis
Your veterinarian starts with a history and physical examination, then may recommend blood and urine tests. Some results can suggest the condition: for example, low sodium and high potassium may point toward a hormone deficiency. Other illnesses can produce overlapping findings, and some affected dogs do not have the typical electrolyte pattern.
The standard confirmatory test measures cortisol before and after a dose of ACTH, a hormone that normally prompts the adrenal glands to release cortisol. A dog with the disease has an inadequate cortisol response. The veterinarian interprets that result alongside the examination, other tests, and medication history. Tell the clinic about any steroid medication your dog has received because it can affect the testing plan.
The Merck Veterinary Manual’s guide for owners explains why routine laboratory findings may raise suspicion and why the ACTH stimulation test is used to confirm it. A single symptom or a single unusual routine test result is only part of that assessment.
Treatment and the follow-up plan
When Addison’s affects dogs, they generally need replacement of deficient hormones under veterinary supervision. The plan depends on which hormones are deficient and on the dog’s condition. A dog in crisis needs emergency stabilization; a stable dog may begin a longer-term plan as an outpatient. Your veterinarian will explain the medication schedule and what to do if a dose is missed or a dog becomes ill.
For canine Addison’s disease, follow-up combines what you observe at home with examinations and laboratory checks. For this canine adrenal condition, electrolyte testing helps the veterinarian assess mineral balance, while changes in appetite, thirst, energy, or weight can inform the wider review. Appointments may be closer together when a plan is first established or adjusted, then scheduled according to the dog’s needs.
After a diagnosis of Addison’s disease, canine care needs careful follow-up; ask how the clinic wants you to report changes between visits. For dogs diagnosed with Addison’s, a written plan for illness, travel, or other stressful events can clarify whom to call and when. Do not change medication on your own; contact the veterinary team for instructions tailored to the situation.
For dogs living with Addison’s, keep the clinic’s contact details and your dog’s medication list accessible to anyone responsible for their care. Record appointments and test dates, and let the clinic know if a medication is difficult to give or a refill may be delayed. Consistency gives the veterinarian a clearer basis for interpreting changes.
Questions for your veterinarian
Before you leave, ask: Which changes in appetite, energy, drinking, or weight should prompt a call? When should the next examination and electrolyte check take place, and how will the results guide follow-up? What is the plan if my dog vomits, misses medication, or faces a stressful event? Which signs mean I should go straight to an emergency clinic, and what information should I bring?
