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Hello this is Dr. Holloway but you can call me Dr. H for short.
To answer your question Hypothyroidism causes affects the metabolisms in the body, particularly with fat metabolism and even skin metabolism. The risks involved with not treating pets with hypothyroidism mainly are increases in weight gain and also your pet has a potential for chronic skin and ear infections.
May I ask what you mean by MAY have hypothyroidism? Has he/she been tested with the T4 test and came up low or in the gray/inconclusive zone?
- Dr. H
Some other common symptoms of hypothyroidism is lethargy, dry flaky skin with a dull haircoat, hair loss, and secondary infections of the skin such as demodexx or yeast infections.
There are other organs that can be affected with having a hypothyroid pet that is untreated but they are not as common as the ones mentioned above, but can include facial paralysis, weakness, or conjunctivitis. These as I mentioned are very rare and only occur in <5% of cases.