Addison's Disease Follow-Up in Dogs: A Protocol for Veterinary Clinics

Hypoadrenocorticism — Addison’s disease — is uncommon in dogs, but when it is diagnosed and managed correctly, the prognosis is excellent. Research tracking dogs treated between 1979 and 1993 found a median survival time of 4.7 years, with most dogs dying from causes unrelated to their Addison’s disease. This is a highly manageable condition. The challenge is that it requires lifelong medication, strict adherence to DOCP injection intervals, appropriate glucocorticoid stress dosing, and owner education sufficient to recognise — and act on — the early signs of an Addisonian crisis. Without structured follow-up, “easily managed” becomes “potentially fatal” the first time the owner misses a DOCP injection or fails to recognise a stress response.

Why Addison’s follow-up is fundamentally about owner education and compliance

The management of Addison’s disease involves two distinct medication requirements. Nearly all dogs with typical primary hypoadrenocorticism need both glucocorticoid replacement (prednisone, usually at a physiological dose of 0.1–0.2 mg/kg/day) and mineralocorticoid replacement — most commonly desoxycorticosterone pivalate (DOCP), administered by subcutaneous injection every 25–28 days. Atypical Addisonian dogs, who lack electrolyte abnormalities at presentation, need glucocorticoids only — but require electrolyte monitoring in case mineralocorticoid deficiency develops later.

The DOCP injection interval is one of the most important variables in long-term management. Individual dogs vary in how long a DOCP injection controls their electrolytes — some dogs need injections every 21 days, others can extend to every 30 or 35 days. Identifying the appropriate interval for each dog requires monitoring electrolytes at day 14 and day 25 after each injection during the dose-finding period. A follow-up call between injections that asks about clinical signs — changes in thirst, urination, appetite, or energy — provides the owner-side data that complements the laboratory results.

The stress dosing principle is the other critical area where owner education determines outcomes. Dogs with Addison’s cannot mount a normal cortisol stress response — any significant stressor (illness, injury, surgery, even a stressful veterinary visit) requires a 2–3× increase in their prednisone dose. Owners who understand this and apply it prevent Addisonian crises. Owners who don’t may present with a dog in cardiovascular collapse.

The Addison’s disease follow-up timeline

TimepointWhat to checkRed flags
1–2 weeks post-diagnosis / post-DOCPElectrolytes (sodium and potassium) at day 14 to assess DOCP efficacy, clinical signs improving (energy, appetite, reduced vomiting), glucocorticoid dose appropriateElectrolyte abnormalities persisting at day 14 — DOCP dose may need adjustment; persistent vomiting or lethargy — glucocorticoid dose review
Day 25–28 (before next DOCP)Pre-injection electrolytes to determine whether interval is appropriate, owner reports on clinical signs in preceding weeksHyponatraemia or hyperkalaemia before injection due — injection interval needs shortening; signs of under-supplemented glucocorticoid (lethargy, inappetence)
Every 3–6 months (stable)Electrolytes, full biochemistry (assess renal and hepatic function), blood pressure, owner-reported signs, weightAny electrolyte drift — dose adjustment; owner has been skipping stress dosing
After any illness, injury, or procedureConfirm stress dose was given, recovery proceeding normally, any residual signsOwner not aware of or not applying stress dosing protocol — urgent education; signs of crisis (weakness, collapse, vomiting) — emergency contact

What to ask owners during Addison’s follow-up

  1. Has [dog name]‘s energy and appetite been stable since the last DOCP injection?
  2. Is he drinking and urinating at a normal amount?
  3. Have there been any episodes of vomiting, diarrhoea, or weakness since the last visit?
  4. Have there been any stressful events — illness, an injury, visitors, travel, a grooming appointment — since the last DOCP?
  5. If yes: did you increase the prednisone dose during that period?
  6. Are you giving the prednisone consistently every day at the right dose?
  7. Have you noticed any signs that suggest the DOCP is wearing off before the next injection — reduced appetite, lethargy, or GI signs in the last few days before it’s due?
  8. Is the DOCP injection still being administered correctly — subcutaneously, at the appropriate site?
  9. Do you have the next blood test and injection appointment booked?
  10. Are you confident about what to do if [dog name] becomes unwell — do you know when to contact us urgently?

Common Addison’s follow-up mistakes clinics make

Not establishing the stress dosing protocol explicitly. “Double the prednisone if he’s stressed” is not sufficient instruction. Owners need to know specifically: what counts as a stressor (illness with fever, injury, any procedure including grooming, significant environmental stress), what dose to give, how long to continue the higher dose, and when to call the clinic. A follow-up call at 1–2 weeks post-diagnosis that specifically revisits this protocol — with examples — is essential.

Not asking about interval compliance between DOCP injections. Owners who find the injection difficult or expensive sometimes extend the interval without informing the clinic. A follow-up call at day 20–22 — “we’re just checking in ahead of your next injection in a few days” — normalises the interval and surfaces any compliance concerns before electrolytes deteriorate.

Assuming stability means no monitoring needed. Well-controlled Addisonian dogs can look completely normal for months. The risk is that owners interpret this stability as evidence that monitoring is no longer necessary, and stop attending recheck appointments. Regular follow-up calls that ask about clinical signs maintain owner engagement with the monitoring schedule.

How to automate Addison’s follow-up without adding to your team’s workload

Nidana Loop schedules a 2-week check call after each DOCP injection and a clinical signs check at day 22–24 before the next injection is due. These calls ask specifically about energy, appetite, GI signs, and any stressful events. The clinic sees a flag for any case where the owner reports illness or stress without appropriate dose adjustment. Monthly check-ins for stable patients keep owners engaged with the monitoring programme without requiring manual scheduling.

See how Loop handles Addison’s disease follow-up calls → Book a 20-minute demo


Related: Cushing’s disease follow-up · Hypothyroidism follow-up in dogs · Diabetes mellitus follow-up

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