• Increased appetite & thirst
• Weight loss
• Hyperactivity
• Poor coat/fur condition with possible hair loss
• Diarrhoea or vomiting
• Urinating in different locations around the house (outside of the litter tray)
• Rapid heart rate
• A lump in their neck
Not all these signs will occur in every cat with hyperthyroidism.

Your vet will diagnose if your cat has hyperthyroidism based on the information you provide and a physical examination.

Cats that have hyperthyroidism have a reduced quality of life and, if untreated, the condition can result in heart failure, blindness or death.
So, if your cat is showing any signs of hyperthyroidism – please seek immediate veterinary advice.

Cats that have hyperthyroidism have a reduced quality of life and, if untreated, the condition can result in heart failure, blindness or death.
So, if your cat is showing any signs of hyperthyroidism – please seek immediate veterinary advice.