Hyperthyroidism is the most common endocrine disorder in older cats. Early recognition and appropriate treatment dramatically improve quality of life and reduce suffering.
Hyperthyroid cats experience chronic physiological distress - high heart rate, hypertension, weight loss despite ravenous appetite, and anxiety. Without treatment, heart failure and retinal detachment from hypertension cause profound suffering. Early diagnosis and treatment restore normal quality of life. Owner recognition of subtle early signs is key to timely intervention.