Hypothyroidism is rare in cats. When it does arise, however, it can cause symptoms including weight gain. Here, our vets explain the causes, signs, and treatments of hypothyroidism in cats.
Hypothyroidism vs Hyperthyroidism in Cats
A number of essential processes in your cat's body, including metabolic rate, are regulated by the hormones produced by their thyroid. If your cat is diagnosed with hypothyroidism, it means that their thyroid gland is underactive and failing to produce enough of the hormones required to maintain your companion's health. Conversely, if your cat's thyroid is overactive, your kitty is suffering from hyperthyroidism, which is often seen in older cats.
In most cases, hypothyroidism occurs in cats who have undergone surgery or iodine therapy to treat hyperthyroidism. That said, in some rare cases the condition may be caused by cancer, iodine deficiency or thyroid gland abnormalities.
Signs of Hypothyroidism in Cats
As mentioned above, if your kitty has hypothyroidism, their metabolism will slow due to a lack of essential thyroid hormones. This reduced hormone level can result in a host of symptoms including:
- Weakness
- Intolerance to cold
- Constipation
- Hair matting
- Neurological changes
- Unkept appearance
- Hair loss
- Weight Gain
- Lethargy
- Mental dullness
- Low body temperature
- Inactivity
If you notice any of the above symptoms in your feline companion, make sure you make an appointment to see your vet as soon as possible. Your veterinarian will be able to assess your cat's symptoms, inquire into their medical history, and run any necessary diagnostic tests to determine whether or not your cat has hypothyroidism.
Some of the most common diagnostic tests used to determine whether or not a cat has hypothyroidism is a special kind of blood test, called a 'thyroid panel.' Using this test, our vets will be able to measure the abundance of a protein called T4 in your cat's blood. If the value is low, then your vet will be able to say with some confidence that your cat is suffering from hypothyroidism.
Treatment for Cats with Hypothyroidism
The majority of cats diagnosed with hypothyroidism will not require treatment. However, if your pet's symptoms are more severe, synthetic hormone supplements may be prescribed by your vet, and follow-up blood tests will be scheduled in order to monitor your cat's hormone levels to ensure they normalize.
A modified diet with reduced fat may also be recommended for your cat while they are recovering from hypothyroidism. In most cases, cats will be able to recover well from hypothyroidism, with a notable improvement in their health seen in just a short amount of time.
Note: The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding pets. For an accurate diagnosis of your pet's condition, please make an appointment with your vet.