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What the experts now understand is that almost all primary hypothyroidism in dogs is caused by thyroiditis (autoimmune destruction of the thyroid gland), and that this is a genetic disorder. Primary idiopathic hypothyroidism, if it exists at all, is a rare condition.
- Ten Most Common Hereditary Diseases in Dogs - WSAVA 2017 Congress - VIN
While autoimmune thyroiditis certainly does exist as a...
- Ten Most Common Hereditary Diseases in Dogs - WSAVA 2017 Congress - VIN
While autoimmune thyroiditis certainly does exist as a hereditary disease in dogs, it may be an improperly or over-diagnosed disorder. Inherited Cataracts. Many dogs develop slowly progressive cataracts as they get older, and it is likely that all spontaneous cataracts have hereditary components.
More than 90% of dogs that are diagnosed with hypothyroidism have what is called primary hypothyroidism, which can result from two processes: Thyroiditis: Healthy thyroid tissue is lost due to the dog’s own immune system creating inflammation within the glands.
Congenital primary hypothyroidism may result from one of various forms of thyroid dysgenesis (eg, athyreosis, thyroid hypoplasia) or from dyshormonogenesis (usually an inherited inability to organify iodide).
A hereditary component to hypothyroidism is likely in many purebred dogs. Golden Retrievers and Doberman Pinschers have been shown to be at increased risk for developing hypothyroidism, and Beagles and Borzois have been shown to have heritable lymphocytic thyroiditis.
Canine Autoimmune Thyroiditis is a genetic disease and is the cause of over half the cases of hypothyroidism diagnosed in dogs. While just one individual symptom may not alert you to this significant genetic problem, observing a combination of symptoms should signal the need to further test for autoimmune thyroiditis in dogs. The incidence of ...
Hypothyroidism is a common endocrine disease of dogs. It occurs when the thyroid glands fail to produce adequate amounts of the hormones thyroxine (T4) and triiodothyronine (T3). Primary hypothyroidism resulting from idiopathic thyroid gland atrophy or immune-mediated lymphocytic thyroiditis is the most common diagnosis.
