Causes
Almost always destruction of the thyroid gland by an immune-mediated or degenerative process. Predisposed breeds: Golden Retriever, Labrador, Setter, Boxer, Dachshund.
Diagnosis
A blood test that measures thyroid hormones.
Treatment
Lifelong treatment with thyroid hormone tablets. It is simple, inexpensive and very effective: the improvement is remarkable. Regular check-ups to adjust the dose.
Prevention
Not preventable. Detection through routine blood tests allows early treatment.

