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My dog has sudden red spots on her inner leg. Should I worry?

Updated on September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Female | spayed | 11 months and 15 days old | 9 lbs

What could these red spots on the inner left leg of my dog be? Should I be concerned, only on that area, noticed it yesterday.

2 Answers

Most Helpful Answer

Lauren Jones VMD

Answered By Lauren Jones VMD

Veterinarian

Published on November 3rd, 2020

It's possible that Feli has been licking or scratching this area, causing these abrasions. This type of lesion can develop pretty quickly - even overnight. Some of the most common causes of itching include allergies and fleas. Make sure that she's regularly receiving a good quality flea preventive (Bravecto, Nexgard, Credelio and Simparica are all great prescription options, and K9 Advantix II is available over the counter). You can also give her a bath in a gentle oatmeal or baby shampoo in case there are any lingering allergens on her coat causing irritation. You certainly don't need to rush her to a vet for these lesions alone, but if they get worse or spread, then you should take her to get checked out. When dogs scratch, they can damage the protective skin barrier, which can make them susceptible to developing skin infections. I hope that she's on the mend soon!
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Related Answers from Veterinarians

  • Answered By Jessica Keay, DVM

    Veterinarian

    Published on March 5th, 2018

    I am sorry to hear about your concern for Dani! Based on your photo the most likely culprit is a fly bite. We often see these red circular lesions with fly bites, particularly black flies. You can try putting some hydrocortisone cream onto the area if it seems to be bothering her/itching. If the lesions do not resolve with time or if they are increasing in size/she will not leave them alone/she shows any other symptoms such as lethargy, hair loss, oozing or discharge from the skin, then a vet exam is warranted. Best of luck to you!

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    2Pet Parents found this answer helpful

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