Knowing Overactive Thyroid in Cats Symptoms, and How It Diagnosed

Knowing Overactive Thyroid in Cats Symptoms, and How It Diagnosed

What does overactive thyroid in cats manifest in? The condition itself seems to be so perilous, and in fact—it truly is! If you don’t have any idea what kind of situation it is, better to stick on this article. This article will tell you what condition can be led from an overactive thyroid gland.

First, let’s talk about definition as many sources usually do. So, what is overactive thyroid? It is quite rare for medical personnel to mention it as ‘overactive thyroid’, to be honest. Instead, the popular name for this condition is hyperthyroidism.


Hyperthyroidism in cats or feline hyperthyroidism is mentioned as a condition in which a feline thyroid gland works too hard, hence producing a higher number of thyroid hormones. While this hormone has a vital function in the body, if its titer is too much, it will affect various organs, be it kidney, heart, and many other.


Symptoms of feline hyperthyroidism

You should suspect an overactive thyroid in cats if your older furry feline (age 10 or more) shows symptoms like dropping weight despite higher appetite and rapid heart rate, which is medically called as tachycardia.

In younger cats and the senior ones, the symptoms of overactive thyroid manifests in behavioral changes as well, especially its agility. Felines who are dealing with hyperthyroidism tend to be more agile, restless, and hyperactive. It also meows more often as if seeking attention.

Not only that, but physical changes will also appear in the form of greasy coat, frequent puking, and even diarrhea. These may be rarely found, but it exists.



Both younger and older cats are prone to this condition, and that would be great to handle it as quick as possible. That said, the diagnosis of hyperthyroidism tends to occur during frequent health assessment.

Or, if your cat shows symptoms as mentioned earlier, the vet will perform a bloodwork in order to check the cat’s T4 hormone. This hormone is the main indicator used in diagnosing hyperthyroidism.



You may wonder what if your cat had this disease. Will it be curable? Fortunately, hyperthyroidism is a manageable disease. However, it seems curing it like infectious disease will be quite impossible still.

That’s why, it’s better to learn that your cat is facing this situation sooner. When known sooner, the prognosis is better as it can be managed quicker.

What about the cat’s life expectancy? Well, it varies depending on how the disease is managed. It can be less than a year, but a cat can endure it for more than 3 years. Dietary control, gland surgery, as well as radioactive therapy can be taken as the curative actions for overactive thyroid in cats.

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