Primary hypothyroidism
Also known as: Schilddrüsenunterfunktion · Unterfunktion der Schilddrüse · Autoimmunthyreoiditis · Lymphozytäre Thyreoiditis · Canine Hypothyroidism
Overview
What it is
Primary hypothyroidism is an endocrine disorder where the thyroid gland, located in the neck, fails to produce enough thyroid hormones. This hormone deficiency is usually caused by the immune system mistakenly attacking the gland or by the gradual replacement of thyroid tissue with fat. Because these hormones regulate how the body uses energy, a shortage slows down the dog's entire metabolism.
How it presents
Owners typically notice symptoms in middle-aged dogs, often starting between two and six years of age. Common signs include unexplained weight gain without an increase in appetite, low energy, symmetrical hair loss on the flanks, and a tendency to seek out warm places.
Treatment
The condition is not curable but is highly manageable with lifelong daily oral thyroid hormone supplements. Regular blood tests are required to monitor hormone levels, with lifetime treatment costs typically ranging from 1,500 to 5,000 EUR.
How it's tested
Schilddrüsenprofil (T4, fT4, TSH)(T4/TSH)
Primary testClinical examDie Diagnose der primären Schilddrüsenunterfunktion erfolgt über ein Schilddrüsenprofil im Blut, das Gesamt-T4, freies T4 und TSH (Thyreoidea-stimulierendes Hormon) misst.
Issuing body: vet
Affected breeds
15 of 15 breeds
Giant SchnauzerRecommended standard
Tibetan MastiffRecommended standard
American AkitaAlso recommended
Berger PicardAlso recommended
Black and Tan CoonhoundAlso recommended
Brittany SpanielAlso recommended
Halden HoundAlso recommended
HovawartAlso recommended
Ibizan HoundAlso recommended
Irish Water SpanielAlso recommended
Italian GreyhoundAlso recommended
Kangal Shepherd DogAlso recommended
Polish Lowland SheepdogAlso recommended
Rhodesian RidgebackAlso recommended
Gordon SetterOptional
Treatment cost
Estimated range of typical treatment costs. Actual costs depend on severity, clinic and region.
Frequently asked questions
What is Primary hypothyroidism?
Primary hypothyroidism is an endocrine disorder where the thyroid gland, located in the neck, fails to produce enough thyroid hormones. This hormone deficiency is usually caused by the immune system mistakenly attacking the gland or by the gradual replacement of thyroid tissue with fat. Because these hormones regulate how the body uses energy, a shortage slows down the dog's entire metabolism.
How is Primary hypothyroidism tested?
Tests currently in our database: Schilddrüsenprofil (T4, fT4, TSH).
Which breeds are most affected?
Most commonly affected: Giant Schnauzer, Tibetan Mastiff, American Akita, Berger Picard, Black and Tan Coonhound, Brittany Spaniel, Halden Hound, Hovawart.