Thyroid gland secreting too much thyroid hormone--hyperthyroidism.

This is the medical term for an overactive thyroid gland. One of the many things the thyroid gland is responsible for is to regulate metabolism. When too much thyroid hormone is secreted, the metabolism quickens; secreting too little results in hypothyroidism and a slowed metabolism.

Hyperthyroidism is an endocrine disease, like diabetes; those with endocrine-related disorders are more prone to various types of neuropathy. As with diabetes mellitus, hyperthyroidism can mean polydipsia and polyuria symptoms[1].
Scan of normal cat at left: scan of cat with feline hyperthyroidism at right.
Both thyroid lobes shown on normal cat.

See the discussion of hyperthyroidism in cats at the Marvista Vet Internet site.

The US Food and Drug Administration approved a feline hyperthyroid treatment June 12, 2009,[2] called Felimazole[3]. Felimazole is made by Dechra, UK.

Further ReadingEdit


While this website specializes in treating feline hyperthyroidism with radioiodine, it also provides links for information on surgical hyperthyroid treatment and medication-based management of the condition.



  1. Diabetes Mellitus-Symptoms Common to Other
  2. Felimazole Approved by FDA
  3. FDA Felimazole FDA Approval Documents
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