Feline hyperthyroidism is one of the most common endocrine disorders in older cats. Understanding treatment options helps owners make welfare-positive decisions for affected animals.
Hyperthyroid cats suffer a range of welfare impacts from the chronic hormonal imbalance: increased heart rate, hypertension, gastrointestinal disturbance, and weight loss despite ravenous appetite. Untreated or under-treated cats may also develop concurrent kidney disease as normalising thyroid function can unmask pre-existing renal impairment. Treatment choice requires balancing welfare considerations: radioactive iodine is curative but requires a period of isolation post-treatment; daily oral medication is accessible but requires consistent compliance; dietary restriction demands exclusive feeding of a specialised diet. Each option requires careful monitoring of renal function post-initiation. Early diagnosis and treatment significantly improve quality and length of life.