Addison's disease causes life-threatening adrenal insufficiency in dogs, requiring lifelong management but offering excellent quality of life with appropriate treatment.
Addison's disease before diagnosis causes chronic welfare compromise through subtle but real physiological insufficiency - fatigue, gastrointestinal symptoms, and reduced stress tolerance that owners often attribute to vague 'not thriving' behavior. Addisonian crises cause life-threatening cardiovascular collapse with extreme weakness, pain from gastrointestinal cramping, and disorientation. The dramatic presentation of crisis contrasts with the excellent prognosis once diagnosis is made and treatment initiated. Dogs on appropriate mineralocorticoid replacement live normal, comfortable lives with welfare indistinguishable from unaffected dogs. The welfare-positive message of Addison's disease management is one of transformation - a previously suffering animal restored to full health and vitality through diagnosis and appropriate medication.