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If Feline Hyperthyroidism is Left Untreated

Feline hyperthyroidism can often be mistaken for changes that accompany aging in cats. Unfortunately, this means that many pet owners leave the condition untreated.Doing so can cause pain and anguish for the cat – and may even be fatal.


Feline hyperthyroidism is treatable and can be completely cured if spotted early.


Long-Term Effects

Veterinarians who have seen cats with untreated feline hyperthyroidism often see cats that:

  • Are restless and nervous
  • Developed serious heart problems
  • Exhibit blood in their stools
  • Have grown very sick over the years
  • Have stopped eating altogether
  • Suffer from hair loss


Have Your Cat Tested

To spare your cat the serious medical problems that can arise from leaving feline hyperthyroidism untreated, it is important to begin treatment as soon as possible. Contact your veterinarian immediately if and when symptoms are spotted.


The Only Effective Treatment

Your veterinarian may recommend Radioactive Iodine Therapy for your cat's hyperthyroidism. This therapy is the most effective treatment option for treating feline hyperthyroidism.

In this treatment:

  • A radioactive iodine is injected
  • It will eliminate abnormal thyroid tissue
  • It won’t harm surrounding tissues
  • Your cat will be monitored for a few days after

This type of treatment is considered the most desirable because:

  • Low risk of side effects
  • Often, only a single treatment is needed
  • Surgery to correct the issue can be dangerous
  • Hormone therapy is not needed following the surgery
  • Medication is inconvenient and comes with side effects


Never leave feline hyperthyroidism untreated. If your cat is exhibiting symptoms of feline hyperthyroidism, please contact your veterinarian immediately.