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Why is my dog's skin darkening after pyoderma antibiotics?

Updated On September 23rd, 2025

Pet's info: Dog | Golden Retriever | Male | unneutered | 2 months and 21 days old | 15.4 lbs

Hi, my dog is on cephalexin because of pyoderma, we are on our 9th day of treatment and i think the pyoderma has resolved however i noticed that his belly and the skin on the front of his paws is darkening/blackish purple. Is that normal response to antibiotics? and will it go away on his own or i should stop giving him cephalexin?

1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on December 1st, 2016

Sometimes chronically irritated skin can become hyperpigmented and become darker in color, which could be a sign that his skin is healing. This is usually not related to antibiotics and as long as he seems comfortable I would recommend finishing the course of cephalexin. It also might be a good idea to contact your veterinarian and make sure there are no other specific concerns for Audi's particular case.

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