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Dermatology and ear diseases of dogs and cats

Experience in the area

I am the author of "Small Animal Ear Diseases; An Illustrated Guide" published by W.B. Saunders. I have over 25 years of clinical experience with a special interest in dermatologic conditions and ear diseases.


American Academy of Veterinary Dermatology


Veterinary Forum
Veterinary Medicine
Waltham Focus

What do you like about this subject?

Of all the diseases seen in dogs and cats, skin and ear diseases seem to fall into the number 1 and 2 categories.

What do you still hope to achieve/learn in this field?

There are a number of unanswered questions relating to why dogs and cats get ear disease. The bacteria and yeasts are hard to deal with and the area I am researching is how to treat these cases more effectively. I have designed the MedRx Video Vetscope, a video based imaging system for veterinarians to operate in the ear.

Something interesting about this subject that others may not know:

Dogs with ear infections that do not resolve within a month or 6 weeks usually have a middle ear infection as well. The eardrums rupture in response to external ear disease. Most people and vets do not know this.

Something controversial or provocative about this subject

Antibiotics alone are not the answer to ear diseases.

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Prashant S Akerkar12/30/16101010Dear Dr Louis Thanks. Prashant

Recent Answers from Dr. Louis N. Gotthelf

2016-12-21 flaking on fur, dandruff?:

Olive oil will not work like the essential fatty acids (EFA) do.  The EFAs contain specific long chain Omega3 fatty acids found in certain fish oils. These are primarily EPA and DHA.  They can also be

2016-12-21 flaking on fur, dandruff?:

Without actually examining the dog I cannot be very specific. If you are not confident in your vet's assessment, then you might try another vet that deals a lot with skin problems.   Flakes can be from

2016-12-03 Weimaraner bumps on belly and head:

When I cannot identify something like a nodule, I will do a fine needle aspirate of the lesion to see if the cells are identifiable as pus cells, tumor cells, cells consistent with a cyst, or something

2016-11-29 Dog whining:

Many dogs will cry and whine after anesthetics.  That's the effect they have until all of the drugs are out of the system.  You should call your vet and report this because there may be something else

2016-11-04 Black scabs randomly over dogs body, and smelly ears:

These black scabs may be dried up pustules.  They are usually the result of a bacterial skin infection.  You should let your vet check the skin to make sure.    IF the other dog is scratching a lot and


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