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Hyperthyroidism in Cats

Hyperthyroidism in Cats

While most cats have a thyroid that functions properly, helping to regulate the functions of their body, some have an overactive thyroid which can lead to serious concerns. Here, our White Hall vets share some important information about the causes and symptoms of hyperthyroidism in cats and how to manage this condition to help your feline friend live comfortably.

The Effects of Hyperthyroidism in a Cat

Hyperthyroidism in cats happens when their thyroid gland begins to overproduce hormones, usually once they are well into their senior years. Unfortunately, when the thyroid gland creates more of the hormone than is needed it can begin to have an adverse effect on the heart and other organs of your feline friend.

One of the most common causes of hyperthyroidism in cats is non-cancerous tumors while these can occasionally turn out to be cancer.

If you notice that your cat is showing any of the signs of hyperthyroidism you should reach out to your vet to have them examined right away. When diagnosed and treated early your cat will have a better chance at living comfortably.

Symptoms of Hyperthyroidism in Cats

Some of the most frequently seen hyperthyroidism in cats symptoms include the following:

  • Weight loss (With or without loss of appetite)
  • Increased thirst
  • Increased urination (sometimes in inappropriate places like outside of the litter box)
  • Vomiting / Diarrhea
  • Restlessness / Hyperactivity
  • Aggressive behavior
  • Difficulty breathing
  • Weakness
  • Depression
  • Greasy / Matted hair

Feline Hyperthyroidism Treatment Options

There are a number of different options for hyperthyroidism in cats treatment including

Medication for hyperthyroidism in cats: With this treatment, you will need to give your cat an anti-thyroid medication that works to decrease the production of the thyroid hormone. Your cat will need to be given this medication twice daily for the remainder of their life.

Radioactive iodine therapy: Treating hyperthyroidism in cats with iodine therapy includes the injection of iodine directly into their body so that it enters the bloodstream. This radioactive iodine will make its way through the body, destroying any abnormal cells it comes into contact with. You can expect results usually in as little as a few weeks.

Surgical treatment for hyperthyroidism in cats: One of the potential options for treating hyperthyroidism in cats is surgical intervention. Your vet would surgically remove the thyroid which eliminates the need for daily medications. Your vet would need to complete diagnostics before surgery to ensure that your cat can safely undergo anesthesia during the procedure.

Treating Hyperthyroidism with dietary changes: Your vet may also suggest making changes to your cat's diet in order to alter the amount of iodine in their diet which might have an effect on their thyroid. This type of treatment is still a relatively new option and you should consult your vet before making any changes.

Prognosis For Cats With Hyperthyroidism

Thankfully, the prognosis for cats with hyperthyroidism is quite good. Especially if their condition has been diagnosed early. Regardless of the type of treatment that your vet recommends you can expect your cat to bounce back and live a happy and healthy life as long as you continue to bring them in for regular checkups and stay on top of managing their condition.

What if the symptoms of hyperthyroidism in cats aren't treated?

When left untreated, hyperthyroidism can cause a number of serious symptoms and complications. Your cat will become more ill over time. You may notice symptoms such as blood in their stool and they may not eat very much which can lead to other issues.

Many cats that are suffering from untreated hyperthyroidism experience potentially fatal heart issues due to their heart working extra hard to keep your cat's body running.

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.

If you think that your cat may be showing the signs associated with an overactive thyroid, please contact our vets in White Hall right away to schedule an examination.

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