What does ringworm look like on a dog’s skin? | arlo.® Atlas
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Overview
Ringworm on a dog’s skin often looks like round or irregular patches of hair loss with flaky, scaly skin. You might also see broken hairs, redness or a crusty edge, but skin problems such as allergies, mites or bacterial infection can look similar, so appearance alone doesn’t confirm it.
Things To Check
1. Look for round or patchy areas of hair loss, especially if the skin underneath looks dry, flaky or scaly.
2. Check whether the hair is broken close to the skin rather than completely missing.
3. Notice if the patch has a red, crusty or slightly raised edge.
4. See if there are one or more patches on the face, ears, paws, legs or body.
5. Check whether your dog is licking, scratching or rubbing the area more than usual.
6. Look at other pets and people in the home for similar skin changes, since ringworm can spread between animals and humans.
7. Note whether the patch is getting bigger, multiplying or becoming more irritated over a few days.
Common Causes
The most common reason people think of ringworm is a fungal skin infection, which can cause circular patches, hair loss and scaling. But similar-looking patches can also come from skin allergies, flea irritation, mites, bacterial skin infection, pressure sores or simple grooming damage. Sometimes a patch is caused by more than one issue at once.
What To Do
Take a clear photo of the patch and keep an eye on whether it changes over the next day or two. Try to stop your dog from scratching or licking the area too much, and wash hands after handling the dog if you’re worried it could be contagious. It’s sensible to keep bedding, brushes and shared grooming tools clean, and to monitor any other pets for new patches. Avoid using human creams or home remedies unless your vet has told you to, as these can make skin problems harder to assess.
When To Contact A Vet
Speak to your vet if the patch is spreading, your dog seems uncomfortable, there are several areas affected, or you’re seeing similar signs in other pets or people at home. A vet can help confirm what’s causing the skin change and advise on the right next steps.
Products That May Help
Keeping up with gentle washing, coat care and routine grooming may help support good skin hygiene while you monitor the patch and limit spread around the home.
Related Questions
Can ringworm spread from dogs to people?
What else can look like ringworm on a dog?
How do vets confirm ringworm in dogs?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.