Welcome! My name is***** am a UC Davis graduate, and currently, a Medical Director of a veterinary hospital.
I am sorry to hear about this concern. Definitely, ER vet visit. Why?
Well, this is more than just a routine ear infection. There is substantial inflammation if you are observing swelling of the pinnae (ear flaps). In addition, there is a risk for aural hematoma formation. That is when the ear flap fills up with fluid. So, I definitely would suggest getting a vet on top of this problem now. They can prescribe appropriate ear medication, and likely start some steroids to knock down the inflammation/swelling quickly.
Here is some general information about ear infections:
What you are describing sounds consistent with otitis externa (an ear infection).
This is usually caused by a bacterial and/or yeast infection
. Ear mites
tend to be more common in puppies/kittens or pets that remain outdoors.Otitis Externa in Dogs
Ideally, the following would be done at your veterinarian,
Examination of the ear canal.
URL=http://www.mypetsdoctor.com/ear-cytology-for-dogs-and-cats]Ear Cytology[/URL]If the ear canal is dirty and not excessively painful, a deep ear flushing
A prescription for a ear medication and ear flush is sent home
If there is substantial inflammation/swelling, a steroid injection or oral medication is prescribed
If there is substantial bacteria identified on the cytology, an oral antibiotic should be prescribedGreat Summary about Ear InfectionsHow to Flush Ears