Overview
Addison’s disease is the opposite of Cushing’s — the adrenal glands don’t produce enough cortisol and aldosterone. Without these hormones, dogs can’t handle stress, regulate electrolytes, or maintain blood pressure. Symptoms are vague (lethargy, vomiting, weakness) and wax and wane, leading to frequent misdiagnosis. An Addisonian crisis (acute adrenal failure) is life-threatening but treatable.
Symptoms to Watch For
- Intermittent vomiting and diarrhea
- Lethargy and weakness that comes and goes
- Poor appetite and weight loss
- Shaking or muscle weakness
- Collapse during stressful events (Addisonian crisis)
How Nutrition Helps
Dogs with Addison’s may have electrolyte imbalances — adequate sodium and potassium levels in food are important. High-quality, easily digestible protein supports muscle maintenance. Stress management through consistent feeding schedules helps — Addisonian dogs handle disruption poorly. Some dogs need slightly higher sodium intake than normal.
How Activity Helps
Regular, gentle exercise is fine for managed Addison’s dogs. Avoid sudden intense activity or stressful situations that can trigger a crisis. Consistent routine is key.
Prevention Tips
- Maintain consistent daily routines
- Carry emergency injectable medication for crises
- Inform pet sitters and boarding facilities about the condition
- Regular blood work to monitor electrolyte levels
- Increase medication dose before known stressful events (vet visits, travel)
Breeds at Higher Risk
Standard Poodles, Bearded Collies, Portuguese Water Dogs, Nova Scotia Duck Tolling Retrievers, and Great Danes. Young to middle-aged females most commonly affected.
Breeds more commonly affected
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