Why does my sensitive skin dog have a red rash on his armpit and neck?

Question

Oscar suddenly has this rash under his armpit. He doesn’t where a harness. So nothing is rubbing. He also has a rash on his neck. Which he’s gotten before. And I just washed him with medicated shampoo and it went away last time. He has sensative skin. First pic - armpit Second pic - neck. Pet's info: Dog | Mixed Breed | Male | neutered | 3 years and 6 months old | 55 lbs

Vanessa Yeager DVM MPH · Accepted Answer

Hi and thanks for posting on Petco Pet Education Center, formerly Petcoach! Thanks for sending along the pictures- the areas there do look very red and do appear infected to me. Allergies, bacterial, fungal, or mite infections can all be possible causes. You can try the medicated shampoo again to see if it helps this time around. If it doesn't help much or if it worsens, I would recommend Oscar see his veterinarian for an exam and further evaluation. He may need antibiotics or other medications as needed.

Why does my sensitive skin dog have a red rash on his armpit and neck?

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