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Why does my dog have hard, rash-like bumps on his neck and armpits?

Updated On September 23rd, 2025

Pet's info: Dog | Weimaraner | Male | unneutered | 1 year and 8 months old

Hi, my dog is a Weimaraner. He has been taking bumps under his neck which is rash like. The bumps are hard but not solid bumps. Can't see that there is any colour to them. He's also taken these under his armpit also. Doesn't seem to be itchy and doesn't seem to phase him. Unsure if it's down to sweating or not. Any advice would be great. Thank you.

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1 Answer

Most Helpful Answer

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Answered By Amy S. Eutsey, DVM

Veterinarian

Published on June 28th, 2017

These bumps look like a folliculitis. This is a superficial skin infection in the hair follicles. It can be caused by allergies, topical irritation to the affected area, excessive moisture from repeated swimming if he does that, fleas, etc. I would recommend that you see your veterinarian. He may simply need a medicated prescription shampoo or possibly an oral antibiotic to clear it up. They may also be able to help you pinpoint what may be the underlying cause.

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