Causes
Almost always a benign enlargement of the thyroid gland. It affects older cats (from 8-10 years of age).
Diagnosis
Blood test measuring the thyroid hormone (T4). It is a routine test in senior cats.
Treatment
Several options: lifelong medication, a specific low-iodine diet, surgery or radioactive iodine (the latter can be curative). The vet helps you choose according to the case.
Prevention
Not preventable. T4 blood test from 8-10 years of age for early detection.

