In a cat with hyperthyroidism, the elevated levels of thyroid hormones, which normally work to regulate the metabolic processes, speed up the metabolism and cause many of the body's functions to run much faster than normal. This can lead to a number of complications, including enlargement of the heart muscle, high blood pressure, kidney function impairment, and intestinal problems. There is no way to prevent hyperthyroidism, but you can catch it early by bringing your cat to the veterinarian for regular checkups and keeping a close eye on his health. Other common symptoms include vomiting, unkempt fur, patches of hair loss, and increased water intake and urination. The good new is that hyperthyroidism is usually not difficult to diagnose or treat.
Veterinarians can generally diagnose the disorder through a physical exam and routine blood test.
Hyperthyroidism can be treated with medication, by surgically removing thyroid tissue, or by destroying thyroid tissue through radioactive iodine therapy. Treatment is often very successful.