Celebrate the Seventh Annual World Thyroid Day

It's not just cats and dogs that develop thyroid disease. Approximately 750 million people worldwide are affected by thyroid …

How to Manage Hyperthyroid Cats that Become Resistant to Methimazole

I have a 19-year old female DSH cat who was diagnosed with hyperthyroidism 5 years ago. I chose not to do the radioactive treatm…

What's the Expected Time for Signs of Feline Hyperthyroidism to Resolve after Treatment?

My 16-year old cat was recently treated with radioiodine (I-131) for his severe hyperthyroidism. How long after radioiodine treat…

What's the Human Risk Associated with Handling of Thyroid Medications?

Maybe I am missing something here, but I have a question about the human risk associated with handling thyroid medications. Why d…

Using a Low-Iodine Diet (y/d) in Hyperthyroid Cats Allowed Outdoors

Is feeding the low-iodine diet (Hill's y/d) an appropriate or reasonable choice for a hyperthyroid cat that is allowed outsid…

Difficult Swallowing in Cats with Hyperthyroidism

We have a 13-year old male cat named Balki with hyperthyroidism and moderate renal disease. He has a history of diabetes, but tha…

Can a Special Diet be Formulated to Treat Hyperthyroidism in Cats?

I have a 13-year old female DSH cat that has recently been diagnosed with hyperthyroidism. Unfortunately found out that she is se…

Methimazole-induced Overgrooming in Cats

Methimazole-induced facial excoriation in a hyperthyroid cat I have a 13-year old male DSH cat with hyperthyroidism. He's bei…

Is a High Serum T4 or Free T4 Level Always Diagnostic for Hyperthyroidism in Cats?

Thyroid scan (scintigraphy) in a cat suspected of hyperthyroidism. Both thyroid lobes are of normal size and shape. Uptake of the…

Transient Hypothyroidism in Cats Following Radioiodine

Transient hypothyroidism, with the development of subnormal thyroid hormone levels, is common after radioiodine therapy. However,…

Success Rates for Radioiodine Treatment in Hyperthyroid Cats

The ideal goal of radioiodine (131-I) therapy in cats with hyperthyroidism is to restore euthyroidism with a single dose of radio…

High-dose Radioiodine Treatment for Thyroid Carcinoma

Figure 1: Hyperthyroid cat with a huge thyroid tumor after 3 years of methimazole treatment.  Notice the swollen neck, which tu…

Video of Hyperthyroid Cat Playing After Treatment

Gizmo is a Turkish Angora with hyperthyroidism whose owners brought him to Dr. Peterson's Hypurrcat treatment center. Dr. Pet…

Estimating the Radioiodine Dose to Administer to Cats with Hyperthyroidism

Ideally, treatment of a hyperthyroid cat with a single dose of radioiodine should restore euthyroidism without inducing hypothyro…