Feline hyperthyroidism is highly treatable when diagnosed, with four treatment options available offering different welfare profiles.
Untreated hyperthyroidism causes significant suffering including rapid weight loss, heart disease, hypertension, and anxiety. All four treatment options can achieve good control. Radioiodine, while requiring a period of hospitalisation, cures the condition permanently without lifelong medication stress. Treatment choice should consider the individual cat's temperament, concurrent conditions, and owner capability.