Hyperthyroid Disease in Cats
Hyperthyroidism, or the overactivity of the thyroid gland, is the most common endocrine disorder affecting cats. Cats with hyperthyoidism, when treated, can generally have comfortable, healthy lives.
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Causes
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In cats, most cases of hyperthyoidism are caused by an increase in the number of cells in the thyroid gland. In about 1 percent of cases, cancer is an underlying cause.
Risk Factors
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Middle-aged and older cats are at highest risk of developing hyperthyroidism. It affects males and females equally across all breeds of cat.
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Symptoms
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Weight loss, with or without increased food consumption, is the most common symptom of hyperthyroidism in cats. Nervousness, vomiting and hair loss are less common symptoms.
Treatment
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Cats with hyperthyroidism can be treated with surgery, radioactive iodine or long-term medication. A veterinarian will decide the best course of treatment depending on the cat's age and overall health.
Prognosis
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In general, the prognosis for cats with hyperthyroidism is good. Most cats with hyperthyroidism respond well to treatment and lead happy, healthy lives.
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