Hyperthyroidism in Cats Causes, Symptoms & Treatment

Top 5 Signs of Feline Hyperthyroidism

Feline hyperthyroidism and diabetes

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Feline hyperthyroidism is a common disease caused by a benign hormone-secreting tumour of the thyroid gland. It is the most common endocrine disorder in cats and occurs most often in cats over ten years of age.

There are several treatment options including surgery to remove the tumour, radioactive iodine treatment to destroy the tumour, prescription diet or medications to control it, feline hyperthyroidism and diabetes. Feline hyperthyroidism is the most common disease of the endocrine system and according to the AAFC American Association of Feline Practitioners, between 1.

One insurance company, Nationwide Insurance, listed hyperthyroidism as the fifth most common medical condition in This leads to a hyperdynamic cardiovascular state in which the feline hyperthyroidism and diabetes beats feline hyperthyroidism and diabetes which eventually causes congestive heart failure and secondary hypertrophic cardiomyopathy. High blood pressure hypertension is another common side effect of hyperthyroidism in cats.

Hypertension has a serious effect on several organ functions. Swelling and bleeding into the eyes can lead to blindness, hardening of the arteries, a hardening of the heart muscle, which over time can cause congestive heart failure and increased risk of stroke.

There are four options to treat hyperthyroidism in cats, and each treatment has its pros feline hyperthyroidism and diabetes cons.

Treatment will depend on other medical conditions your cat may have as well as availability of a nuclear medicine facility and cost. It can take a few weeks for this food to take effect. Pros of this treatment are that it is easy for the pet guardian to manage the disease and cheaper than surgery. Cons are that it is not curative, it only manages the condition. Some cats may be reluctant to eat the diet or may go off their food when unwell, resulting in hyperthyroidism becoming worse again.

Also, the thyroid tumour is still in the cat and may potentially turn cancerous in the future. It would seem another cat had undiagnosed hyperthyroidism and chronic kidney disease and the low iodine diet reversed the hyperthyroidism to an extent that the cat is now in severe kidney failure.

Hyperthyroidism can protect the kidneys in cats with chronic kidney disease see below and great care must be taken when treating a cat who has both hyperthyroidism and kidney disease I know first hand because my own cat died within two weeks of starting on hyperthyroid medication.

Short term this is the cheapest option, but in the long run, it can prove costly having to pay for daily medication for your cat. Methimazole can be given either feline hyperthyroidism and diabetes oral or transdermal applied to the skin inside the ear form. Advantages of medication are that treatment is reversible if side effects occur see precaution at the end of this article.

If both glands are removed, there is increased risk of accidentally removing the small parathyroid glands, feline hyperthyroidism and diabetes, which among other things regulates the calcium supply in the bodywhich can cause hypocalcemia low blood calcium. A single injection of radioactive iodine radioiodine I which concentrates in and destroys the diseased thyroid tissue while leaving the normal thyroid tissue intact.

Some cats will need repeat treatment. Pros are that it is permanent and the parathyroid glands will not be damaged. Cons are that it is expensive in the short term, and can only be performed at a specialist veterinary centre.

For some cats, hyperthyroidism and kidney disease run concurrently. Hyperthyroidism can act to protect the kidneys because it produces a hyperdynamic cardiac state increased blood flow. Kidney failure can become worse once treatment begins and your veterinarian will recommend drugs or diet to control hyperthyroidism if your cat has concurrent kidney disease and closely monitor kidney function. That way, if the kidneys do begin to deteriorate your veterinarian can re-evaluate or stop the medication immediately, opposed to surgery or radioactive iodine treatment which is permanent, feline hyperthyroidism and diabetes.

First noted inhyperthyroidism has become the most common endocrine disorder in cats. So why has this happened? No specific breeds are prone to feline hyperthyroidism, feline hyperthyroidism and diabetes, although one research paper noted that Siamese and Himalayan cats are at a slightly lower risk of developing the disease Kass, P.

There is no sex predilection. There has been research which points towards a link between the consumption of canned food and hyperthyroidism in cats, especially fish feline hyperthyroidism and diabetes liver flavoured varieties. M et al, A large number of plastic products also contain BPA. In fact, the general opinion is that it is likely a number of contributing factors that lead to hyperthyroidism. You can read more about this here. Small cans are less likely to be lined with BPA.

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Feline hyperthyroidism and diabetes