Hyperthyroidism in Cats: Diagnosis and Management in Houston

Hyperthyroidism (overactive thyroid) is one of the most common conditions in senior cats. The good news? It’s highly treatable with medication, dietary management, or other options. Most cats show dramatic improvement once treatment begins.

Symptoms of Hyperthyroidism

– Increased appetite despite weight loss
– Increased thirst and urination
– Hyperactivity or restlessness
– Vomiting
– Diarrhea
– Poor coat quality
– Irritability or aggression

Diagnosis

Blood test showing elevated thyroid hormone (T4) confirms diagnosis. We may recommend additional tests to assess organ function before starting treatment.

Treatment Options

Medication: Anti-thyroid drugs reduce thyroid hormone production. Must be given twice daily, often for life.

Therapeutic diet: Iodine-restricted diet. Some cats respond well to diet alone.

Radioactive iodine therapy: Permanent solution, but requires referral to specialty center. Eliminates need for lifelong medication.

Surgery: Thyroidectomy (thyroid gland removal). Permanent but requires anesthesia.

Long-Term Management

Most cats live many years with proper treatment. Regular bloodwork ensures medication doses remain appropriate.

Schedule Your Cat’s Thyroid Screening

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Hyperthyroidism FAQs

Is hyperthyroidism curable?

Medication controls symptoms but doesn’t cure the condition. Radioactive iodine or surgery provide permanent solutions. Most cats do well with medication.

How often does my cat need bloodwork with hyperthyroidism?

Initial monitoring is monthly until medication is stabilized, then every 6-12 months. Regular monitoring ensures appropriate dosing.

Can diet alone treat hyperthyroidism?

Some cats respond well to iodine-restricted dietary management alone. Others require medication. We recommend trying diet first.

What if I can’t give medication twice daily?

Some alternative treatments exist. Discuss your situation with us—we can explore options like iodine-restricted diet or referral for permanent solutions.

Are there side effects to anti-thyroid medication?

Side effects are rare but can include decreased appetite, lethargy, or skin problems. Regular bloodwork monitors for complications.

What happens if hyperthyroidism is untreated?

Untreated hyperthyroidism causes heart disease, high blood pressure, and organ damage. Treatment prevents these serious complications.

How long will my cat live with hyperthyroidism?

With proper treatment, most cats live several more years. Prognosis depends on overall health and response to treatment.

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