Excess thyroid hormone causes an overactive metabolism that stresses the heart, digestive tract, and many other organ systems.
Untreated Hyperthyroidism Causes
Generally, simple blood tests are all that is needed. Some cats that also have other health problems will require additional tests before treatment can be started. Annual screening can detect this disease before serious problems occur.
There are four basic treatments: daily medication, special food, radioiodine, and surgery. Your veterinarian will discuss the best option for your cat.
Advantages and Disadvantages of Each Treatment.