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My dog has a rash under his fur. What's causing it and what to do?

Updated On September 23rd, 2025

Pet's info: Dog | German Shepherd | Male | unneutered | 3 years and 10 months old

rashes beneath his hair so how I should put topical creams? Should I trim hair or apply like this ? Earlier cephalexin 500mg twice a day for 15 days after every 2months if given has jo side effect on kidney so why on the internet its written this medicine damages the kidney and liver both also to cleanse liver there is an supplement called silymarin so is there any for cleansing of kidney as well? Do others dog also develops this as shown in photo ? And if this left untreated what can it cause

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1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on October 8th, 2019

Hi, and thanks for your question. This could be due to an allergy, although it could also be infection or mites. First of all, in order to rule out skin parasites, you will need to treat with a high quality flea treatment, then ask the vet to perform a skin scrape - this might reveal an infection or a mite infestation. If all of those came back negative, the next step is to treat the allergy symptomatically and try to discover the cause of the allergy. Three main type of allergies are usually affecting pets: food allergies, flea and parasite related ones and environmental type (allergens coming from trees, pollens, dust etc etc). Some medications can be given by the vet in order to repair any possible skin lesions (like steroids and antibiotics). Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!

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