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Anna, Pet Expert/Biologist
Category: Pet
Satisfied Customers: 11545
Experience:  40 yrs.: herps, pocket pets, rabbits, poultry, dogs, horses. Biology degree. Vet assistant.
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My guinea pig has a sore on her ear. Its hard ...

Customer Question

My guinea pig has a sore on her ear. It's hard almost scab-like and doesnt seem to hurt her when I touch it. Any ideas what it could be?
Submitted: 9 years ago.
Category: Pet
Expert:  Anna replied 9 years ago.

Would you take a really close look at the sore, the fur around it, and inside your Guinea pig's ear? See if you can find any tiny bugs - they would be visible to the naked eye, but difficult to see.

Knowing if they're present would help in answering your question.

Thank you.

Customer: replied 9 years ago.
Reply to Anna's Post: Her ears are jet black inside and out, so it's really hard to see. The sore seems to be almost completely on the outside of the ear. It's really hard and crusty. There is some dirt inside her ear, but I don't see any ear mites.
Expert:  Anna replied 9 years ago.
If there are no mites or lice (which wouldn't be in the ear, but in the fur around the sore), the most likely cause of a sore like this is a fungus. Such fungal infections can take on many different appearances. The link I'll give you in a moment has photos of some of them.

The best thing you can do is take her to a vet for a accurate diagnosis and treatment. However, you can try a home treatment first if you want to. Home treatment involves the use of over-the-counter medicated shampoos and antifungals such as Monistat 7 or Lotrimin. Here is a link that will give you all the details:

If you decide to take this route, be sure to follow the instructions exactly. Some products can be toxic if used incorrectly. No chemical is 100% safe. If you don't see improvement within a week or so, you'll need to see a vet.

The other explanation for this sore is that it could be a wound. This is more likely if you have more than one Guinea pig in the cage. If she is your only one, you probably would have seen an injury.

Again, my first recommendation is to see a vet, but of course, you'll have to decide how comfortable you are with trying to treat this yourself.

If you have more questions about this, just let me know. I hope it clears up quickly.


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