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Why is my dog losing so much hair? Could it be Addison's disease?

Updated On September 23rd, 2025

Pet's info: Dog | Boxer | Male | neutered | 11 years and 3 months old | 75 lbs

Is extensive hair loss another sign of Addison disease?

1 Answer

Most Helpful Answer

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Answered By Ann Dion, DVM

Veterinarian

Published on August 31st, 2017

Hello and welcome to Petco Pet Education Center, formerly Petcoach. Addison's disease is called the 'Great Pretender' because the clinical signs vary so much. They often display signs of 'poor doing' which can include a poor hair coat. There are other causes of hair loss as well so making sure that the cause is Addison's and you aren't missing something else is important. I would have Pete seen by your vet for this, and work this up in conjunction with the Addisons. Best of luck with Pete.

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