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My dog has pustules and black spots. Is ketoconazole shampoo enough?

Updated On September 23rd, 2025

Pet's info: Dog | Chow Chow | Male | unneutered | 1 year and 3 months old | 44 lbs

Hi. Mydog is infected with mallassezia. There r also some embeded black spots in his hair folicules. He’s bn washed with ketoconazole shamp for 5 times. No dandruff any more but still i find pyodermic pustules on his body. 3 questiones: 1st- is ketoconazole shamp enough? 2nd- can i add chlorohexidine mouth wash to ketoshamp for antibacterial advange of it? Cuz there r some pet shampoos containing both but not available here 3- what antibacterial injection he can take? Cuz oralAmoxiclav upsets

1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on August 23rd, 2018

Black spots in the hair follicles don't always mean that there is a problem. Using a dog shampoo that contains benzoyl peroxide will help flush the follicles. I would not add chlorhexidine mouth wash since I am not sure the other ingredients in the mouth wash would be good for the skin. Can you buy MalAcetic Shampoo by Dechra online in the UK? It is a good antibacterial and antifungal combo shampoo. It is illegal for us to recommend specific antibiotics since I haven't physically examined Heisenberg. But most simple skin pyodermas clear up with a topical treatment.

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