Hyperthyroidism is one of the most common hormonal diseases in cats affecting 10% of feline population over the age of 9 (Caney, 2013).

Hyperthyroidism occurs when the thyroid gland produces excessive thyroxine (T4) hormone. Thyroxine is involved in the body’s metabolism. This overproduction results in faster metabolism and can stimulate the central nervous system leading to a variety of clinical signs.

Signs you may notice in your pet include:

• Loss of body weight/muscle or tone over their back and hips, despite having a ravenous appetite

• Drinking changes

• Poor coats - often greasy and they look unkempt

• Digestive problems - often leading to vomiting or diarrhoea

• Fast breathing

• Personality changes - become aggressive or restless

• Increased vocalisation

If you notice any of these signs we would always recommend a consult with one of our vets. We will want to examine your pet and we will often recommend a blood test. This blood test looks at your pet’s T4 levels but will also include assessment of other organs, such as the kidneys. This is because excessive thyroxine can lead to changes in other organs, such as the kidneys and heart.

There are a few options for treatment.

1. Oral medication - we often prescribe a liquid medication that is given twice daily. This treatment aims to manage the hyperthyroidism and is lifelong therapy. Your pet will require monitoring bloods.

2. Referral for radioactive iodine treatment. This treatment aims to cure your pet by destroying the excessive thyroid tissue.

3. Surgery to remove the thyroid gland. This also aims to cure your pet.

Many cats live a long and full life following diagnosis and if this article has raised any concerns, then please contact us on 01665252250 or info@coquetvets.co.uk