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Ask Dr. Michael Salkin Your Own Question
Dr. Michael Salkin
Dr. Michael Salkin, Veterinarian
Category: Dog Veterinary
Satisfied Customers: 24468
Experience:  University of California at Davis graduate veterinarian with 44 years of experience
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4 yr old golden retriever with dark crusty skin at underarms

Customer Question

4 yr old golden retriever with dark crusty skin at underarms and lower chest
JA: I'm sorry to hear that. What is the dog's name?
Customer: Brady
JA: Is there anything else important you think the Veterinarian should know about Brady?
Customer: He has been on a course of antibiotics for several weeks. Some diminished energy but other wise, normal appetite and behaviour
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Veterinarian about your situation and then connect you two.
Submitted: 7 months ago.
Category: Dog Veterinary
Expert:  Dr. Michael Salkin replied 7 months ago.
I believe that a yeast (Malassezia) infection has been overlooked. Yeast should be an important differential diagnosis when hyperpigmentation is seen in those areas which are commonly affected when an allergic dermatitis exists - as I would expect to find in a golden as you've described. Brady's vet should perform a cytology (microscopic exam of a small sample of Brady's skin surface) looking for both abnormal numbers of bacteria and yeast. I see that an antibiotic has been prescribed for a pyoderma (bacterial skin infection) but ketoconazole dosed at 5 mg/lb daily should be considered if yeast have overgrown. Bathing in shampoos containing chlorhexidine + ketoconazole or miconazole twice weekly should be considered as well as they'll hasten resolution of both a pyoderma and yeast infectionPlease respond with further questions or concerns if you wish.

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