Author Archives: skinvet

About skinvet

Jon Plant, DVM, is a Diplomate of the American College of Veterinary Dermatology, founder of SkinVet Clinic and developer of RESPIT, regionally-specific immunotheray for atopic dermatitis of dogs and cats. He is a member of the International Committee on Atopic Diseases of Animals, the past President of the Portland Veterinary Medical Association and the Dermatology Section Editor of the Journal of the American Animal Hospital Association.

Serum allergy testing of normal dogs

Do you wonder about the specificity of allergen-specific IgE tests in dogs (the percentage of dogs not allergic to an allergen that are correctly identified as non-allergic)?  Hopefully, you are using clinical criteria to make the diagnosis of canine atopic … Continue reading

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Intradermal testing reliability in dogs

This month I will review the reliability of “allergy” testing in dogs.  If you are going to recommend allergy testing to clients, you should understand their limitations.  The topics I have planned for the coming weeks are: Intradermal testing reliability … Continue reading

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Variability of allergen-specific immunotherapy formulation

Allergen-specific immunotherapy (ASIT) is often discussed as though it represents a uniform treatment option.  In fact, the process of customizing an allergen prescription for a pet is not standardized and there is a great deal of subjectivity involved, even when … Continue reading

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Getting the most from your skin biopsies

It’s frustrating for you and your clients if a skin biopsy result comes back non-diagnostic. Here are some of the things I do to get the most information that I can from dermatopathology. 1. For inflammatory skin diseases, do not … Continue reading

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Skin cytology: let the lesion morphology guide your technique

When it comes to taking samples for skin cytology, there is no one technique that is best in every situation.  Here are my favorite techniques, and when I find them most useful: 1.      Cellophane tape stripping is the technique that … Continue reading

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The quick and dirty on ear canal cytology

Continuing with my focus on diagnostic tips, today I’ll share my approach to ear canal cytology in dogs and cats.  As you know already, this is a simple, but valuable test that should be recommended whenever otitis externa is suspected, … Continue reading

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Tips for interpreting your DTM cultures

One of the topics that veterinarians ask me about most frequently is how to interpret fungal cultures grown on dermatophyte test medium (DTM).  The fungal culture is an important early step in working up many presentations, including folliculitis, patchy alopecia, … Continue reading

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Diagnosing Canine Atopic Dermatitis

How do you diagnose atopic dermatitis in a dog?  That’s right.  Based upon clinical features.  Serum IgE and intradermal testing can be used to identify potential allergens, but the tests are not sensitive or specific enough to rely upon for … Continue reading

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5 Tips for Better Skin Scrapings

What can I possibly teach you about that most basic test in veterinary dermatology, the skin scraping? Taking a skin scraping seems like a simple enough technique, yet at least once per month I am able to find a mite … Continue reading

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