Hyperthyroidism is the most common endocrine condition in cats and can eventually lead to kidney or heart failure. It's wise to watch for symptoms in your feline companion, especially as your pet gets older. Below, you'll learn common hyperthyroid symptoms in cats and the recommended treatment for the condition.
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Identification
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Hyperthyroidism occurs when the thyroid gland, a small organ in a cat's neck, produces excess amounts of the thyroid hormones which regulate the body's metabolism. The most common cause of hyperthyroidism is the overgrowth of benign tissue or nodules in the thyroid gland.
Types
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The most common symptom pet owners notice first is weight loss, even though the cat may be eating more than usual. Other symptoms of hyperthyroidism in your cat may include vomiting, increased urination, nervousness, hair loss or change in glossiness of the coat, diarrhea, tremors and shaking, weakness or fatigue.
Effects
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Untreated hyperthyroidism can cause kidney damage, high blood pressure, and a heart condition called hypertrophic cardiomyopathy. Hypertrophic cardiomyopathy is a thickening of the heart muscle which can eventually lead to heart failure and death.
Prevention/Solution
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Medical treatments include the anti-thyroid drug, methimazole, surgical removal of the thyroid gland or radioactive iodine treatments. Though it is expensive for pet owners, many vets consider radioactive iodine therapy to be the best option for treatment.
Time Frame
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Hyperthyroidism is usually found in older cats, with the median age of onset being 12 to 13 years old.
Significance
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Hyperthyroid is the most common hormonal endocrine disorder in cats. Some veterinarians estimate that about two percent of all senior cats (age nine and over) will develop hyperthyroidism.
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