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What causes dog's painful, spreading crusty skin and hair loss?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male

It started developing about 1 week ago. Started with small area then started to spread quickly. With Dry crusty skin, hair loss on the area. Painfull.

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1 Answer

Most Helpful Answer

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Answered By Megan, DVM, CVA

Veterinarian

Published on April 13th, 2018

Poor Max! This could be a bacterial or fungal infection or even an auto-immune disease. Since it is spreading quickly, I would strongly recommend to have your vet take a look. He is likely going to need some antibiotics, possibly anti-fungal meds, and maybe even some steroids. Unfortunately, there aren't any good over the counter meds to help cure this. I hope this helps!

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