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My dog has diabetes and Cushing's. Is insulin needed if I treat Cushing's?

Updated On September 23rd, 2025

Pet's info: Dog | Goldendoodle | Male | neutered | 7 years and 11 months old | 23.3 lbs

Can a dog diagnosed with diabetes and Cushing's benefit by solely treating one or the other problem but not both? Blood sugar tested at 356..thinking diabetes but then Cushing's was added to the mix. Might the sugar be high because of the Cushing's and could it reduce if we only treated the Cushing's or is it necessary to give insulin injections as well?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on July 14th, 2017

Diabetes and Cushing's disease are caused by two different things, and both need to be treated. While you can see an increase in blood sugar when a dog has Cushing's, it's not as high as the blood sugar levels of diabetic patients. Gabe will need to be treated for both.

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