Health Issues


Feline Hyperthyroidism



Aaron C. Rainer, D.V.M., M.P.H.
East Lake Veterinary Clinic
Killeen, TX
http://www.eastlakevet.org
Does your cat seem like he/she cannot get enough food? Does he/she have an enormous appetite, but never seems to gain any weight? I know what you’re thinking. What cat doesn’t beg for more food? Well, your cat could be exhibiting a symptom of one of the most common feline hormone diseases, hyperthyroidism.

What is Hyperthyroidism?


Hyperthyroidism is very commonly diagnosed today in our feline population. It’s especially common among cats over the age of eight. Most often it is caused by a benign growth that is overproducing thyroid hormone; however, a small percentage, less than 5%, of these are cancerous. This overproduction results in an increase in the cat’s overall metabolism. The typical presentation of signs includes any combination of the following: weight loss, increased appetite, no weight gain despite voracious appetite, hyperactivity, increased drinking, vomiting, diarrhea, not eating, irritability, increased heart and respiration rate, dull hair coat, and hair loss.

Senior Wellness


Hyperthyroidism can be diagnosed fairly easily with a simple blood test, if suspected. However, hyperthyroidism doesn’t always follow the book. There may be no clinical signs that indicate a thyroid test alone, therefore, hyperthyroidism can be overlooked. A good rule to go by is that every cat over the age of eight should receive a routine senior wellness check that could include, but not be limited to a physical exam, fecal exam, heartworm test, complete blood count, serum chemistry panel, urinalysis, thyroid test, and diagnostic imaging. Other common diseases among our senior felines that can be identified with such tests include chronic kidney disease, diabetes, liver disease, and inflammatory bowel disease.

Treatment


Once diagnosed, there are several options to choose from when treating hyperthyroidism that could include antithyroid drugs, radioactive iodine, or surgical removal of the thyroid gland. Untreated disease can lead to congestive heart failure, kidney damage, diarrhea, high blood pressure, retinal detachment, and even death.

Consult your veterinarian if your cat is exhibiting signs of this condition to discuss the best modality of diagnosis and treatment for your cat. If you are concerned about hyperthyroidism or would like to schedule your cat for a senior wellness check, please consult your veterinarian.



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