Hyperthyroidism

What is Hyperthyroidism? Hyperthyroidism is most common endocrine disease that affects middle-aged and senior cats of both genders equally. This condition is characterized by excessive production of two thyroid hormones, by a tumor in one or both thyroids. In fact most tumors are benign, with less than 5 percent being malignant.

How does my cat get Hyperthyroidism? Little is still known about what causes hyperthyroidism, first identified by veterinary researchers in the late 1970s.  The cancerous condition is thought to be age related.

How do I know if my cat has Hyperthyroidism? Unexplained weight loss concurrent with steady or increased appetite is one classic sign of this condition. You may also notice that your cat is acting hyper, appears easily irritated or more chatty. Other related symptoms include the need to drink more water, urinating more plus diarrhea and vomiting episodes. Your veterinarian will be able to identify hyperthyroidism in your cat by performing a complete physical exam that includes palpating the neck area to feel for enlarged thyroids. Blood tests are taken to measure your cat’s thyroid hormone levels.  More detailed blood tests may be required since hyperthyroidism mimics symptoms associated with other conditions, including diabetes and kidney disease. These tests will also assess the condition of your cat’s other organs – vital information needed to determine if other problems coexist.

What can I do about Hyperthyroidism? Three treatments are available for hyperthyroidism. The first and most expensive – radioactive iodine – is also the most effective.  The second option is to give your cat daily doses of anti-thyroid medication for the rest of his life to control his thyroid activity. However, some cats experience serious side effects, including vomiting, anemia and liver damage. Plus, owners and cats must endure the daily stress of giving medicine twice a day. A third option is a surgical procedure called a thyroidectomy in which the diseased thyroid is removed.

Is there anything I can do to prevent my cat from getting Hyperthyroidism? Since the cause remains a mystery, it is difficult to prevent.

Are there certain breeds that get Hyperthyroidism more often? Any cat can develop hyperthyroidism, including males and females of specific breeds or random bred.