Petco Text Logo
Petco Pet Logo

Why does my Shih Tzu have black, itchy skin and thinning hair?

Updated On September 23rd, 2025

Pet's info: Dog | Shih Tzu | Male | neutered | 11 years and 9 months old | 23 lbs

My 12 year old shih tzu male, has black skin on his back with hair thinning he's itching a lot, he's also overweight with skin allergies

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Strydom, DVM

Veterinarian

Published on July 26th, 2017

The symptoms you are describing can be associated with Cushing's disease. I recommend you get Joe Pesci to a vet for an exam. In the meantime, you can try bathing him with a medicated shampoo like this one. The black skin you are describing sounds like a yeast infection on the skin. That could also be making him itchy. https://www.walmart.com/ip/Veterinary-Formula-Clinical-Care-Medicated-Shampoo-for-Dogs-Cats-Antiseptic-Antifungal-16-0-FL-OZ/24893142 Lather the shampoo on, wait 10 minutes and then rinse thoroughly. You can do this 2-3 times per week until the skin/hair is looking better. It is still best to get him to the vet for an exam as soon as you can. Skin issues/allergies are usually secondary to another underlying health issue. I hope this helps. Best wishes!

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored