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Understanding Feline Hyperthyroidism
If your cat is losing weight, acting restless, or eating more than usual, hyperthyroidism could be the cause. Learn what it means, how it affects your cat, and how NuCat offers a safe, permanent cure.
What Is Feline Hyperthyroidism?
Feline hyperthyroidism is the most common hormone-related issue in middle-aged and older cats, affecting about 10% of cats over 10 years old. It’s caused by an overactive nodule on the thyroid gland(s), which releases too much thyroid hormone. Cats have two thyroid lobes, one on each side of their neck, and either or both can be affected. This extra hormone revs up their metabolism, leading to weight loss and putting strain on the heart, digestive system, and other organs.
If your vet diagnoses your cat with hyperthyroidism, it's important to start treatment to manage the symptoms. Without treatment, symptoms worsen, causing severe weight loss and potentially serious issues with the heart, kidneys, and other organs.
Common Symptoms
Increased Appetite
Weight Loss
Increased Thirst
Increased Urination
Unkempt Coat
GI Upset Including Vomiting and Diarrhea
Behavior Changes (Increased Activity, Restlessness, or Irritability)
Vocalization
Frequently Asked Questions About Feline Hyperthyroidism
What is feline hyperthyroidism?
Feline hyperthyroidism is a condition in which a cat’s thyroid gland produces too much thyroid hormone. This increases the cat’s metabolism and can affect the heart, kidneys, digestive system, and overall health. It is most commonly diagnosed in middle-aged and older cats.
What are the most common signs of hyperthyroidism in cats?
Common signs include weight loss despite an increased appetite, increased thirst and urination, restlessness, increased activity, vomiting, diarrhea, an unkempt coat, increased vocalization, and changes in behavior. Symptoms can vary from cat to cat.
Can a cat have hyperthyroidism and still seem healthy?
Yes. Hyperthyroidism can develop gradually, and early signs may be subtle. Some cats may initially seem more energetic or simply eat more than usual. As the condition progresses, weight loss and other health problems typically become more noticeable.
How is feline hyperthyroidism diagnosed?
Veterinarians typically diagnose feline hyperthyroidism using a physical examination and blood testing to measure thyroid hormone levels. Additional testing may be recommended to evaluate kidney function, heart health, and your cat’s overall condition before treatment.
What happens if hyperthyroidism in cats is left untreated?
Untreated hyperthyroidism can continue to worsen and place significant stress on a cat’s body. Over time, it may contribute to severe weight loss, high blood pressure, heart problems, and complications involving the kidneys and other organs.
Can feline hyperthyroidism be cured permanently?
Yes. Radioactive iodine therapy, also known as I-131 treatment, can permanently cure hyperthyroidism in most cats by targeting abnormal thyroid tissue while preserving healthy thyroid tissue. NuCat specializes in I-131 therapy and reports a 98% cure rate with a single treatment.
Is I-131 considered a good treatment option for feline hyperthyroidism?
Radioiodine therapy is widely considered a preferred treatment for many cats with hyperthyroidism because it treats the underlying abnormal thyroid tissue without thyroid surgery or lifelong daily medication. Whether I-131 is appropriate for an individual cat depends on their health and veterinary evaluation.
Where can my cat receive I-131 treatment near Tampa, Florida?
NuCat provides specialized radioiodine (I-131) treatment for cats with hyperthyroidism at its cat-focused facility serving the Tampa Bay area. Cat owners can speak with their veterinarian or contact NuCat at 813-729-7777 to learn more about evaluation and treatment.