Hypothyroidism in a mixed breed dog: Case report
DOI:
https://doi.org/10.31533/pubvet.v17n12e1492Keywords:
Levothyroxine, obesity, thyroidAbstract
Hypothyroidism is an endocrine disease resulting from a deficiency of thyroid hormones that cause metabolic changes. It is a disease more evident in purebred dogs, such as Boxers and Labradors, mainly affecting middle-aged dogs. But, there are also reports in mixed-breed dogs, so far without sex predilection. The clinical signs are varied and, in most cases, non-specific, such as lethargy, weight gain with normophagia, thermophilia, as well as dermatological, neuromuscular and reproductive changes. The main laboratory findings are non-regenerative normochromic normocytic anemia and hypercholesterolemia, as well as increased alkaline phosphatase. In less frequent cases, it is possible to identify hyponatremia and increased alanine aminotransferase. The diagnosis is made via the measurement of thyroid hormones (TSH, free and total T4) and the treatment of choice is levothyroxine sodium. The present study reports a case of hypothyroidism in an overweight seven-year-old mixed-breed dog. The animal was submitted to the hormone replacement treatment of choice, with a response of improvement in the clinical condition.
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