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My dog has red circular spots, bumps, and losing hair. What is it?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 5 months and 18 days old | 20 lbs

Dymond has red circular spots with small bumps on them. It started off with one now she has several. Its causing her to lose hair what should I give her to help?

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3 Answers

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on March 16th, 2018

This could very well be a fungal infection or a bacterial infection. Fungal infections start out as a round hairless lesion, that gets bigger in diameter and starts to eventually grow hair from the middle out, there can be several of those lesions confluencing, Fungal infections are contagious to people. Both a fungal and a bacterial infection need to be treated, There are antifungal/antibacterial shampoos and also oral medications which would need to be prescribed by a vet, I suggest you take Dymond in for an exam and treatment according to the diagnosis,

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    Answered By Jessica Keay, DVM

    Veterinarian

    Published on July 15th, 2017

    It is very difficult to tell without seeing a dog in person what a skin lesion could be. Based on what we see here, we could have a small area of bacterial infection on the skin, we could have ringworm (a fungal infection), or if it is raised/nodular feeling we could have a tumor of the skin. I would recommend a visit to your vet for a closer look. They may recommend a fungal culture to test for ringworm, a skin cytology to look for bacterial growth, or a needle aspirate if they feel it could be a tumor. In the meantime, just in case this could be ringworm (which can be passed to people and other animals) it is best to wash your hands after touching this area of your dog.

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    Answered By Daniel Fonza, DVM

    Veterinarian

    Published on August 19th, 2017

    Hello there and thank you for using Pet Coach! Based on the photo you provided, it looks as if there are several areas of small patchy hair loss with a bump raised in one area. This could be due to hives / allergies, skin infection, skin mites, etc. I would have your vet take a look at this so that a diagnosis can be made and the most appropriate treatment initiated. Please do not hesitate to contact me if you have any other questions or concerns. I am also available via text / phone consultation if needed.

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