Small Animal Dermatology: A Color Atlas and Therapeutic Guide Second Edition

540 Pages·2006·87.59 MB·English

by  Linda Medleau DVM MS

Second Edition
Lindo Medleou,
DVM, MS, Diplomate ACVD
Emeritus Professor of Veterinary Dermatology and Surgery
Department of Small Animal Medicine
College of Veterinary Medicine
University of Georgia
Athens, Georgia
Keith A. Hnilico,
DVM, MS, Diplomate ACVD
Department of Small Animal Clinical Science
College of Veterinary Medicine ~
University of Tennessee
ELSEVIER
Knoxville, Tennessee
SAUNDERS
ElSEVIER
11830 Westline Industrial Drive
51. Louis, Missouri 63146
SMALL ANIMAL DERMATOLOCY: A COLOR ATLAS AND [SBN~13 978.(}.nl6-2825-7
THERAPEUTIC GUIDE, 2nd Edition ISBN O-nl6-2825-7
Copyright (.12006, Elsevier Inc.
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Notice
Knowledge and best practice in this field are constantly changing. As new research and
eXp<'rience bro.lden our knowledge, changes in pr.Jctice, treatmft1t and drug therapy may
become necessMY or lIppropriate. Rellders Me advised to check the most current informlltion
provided (i) on proccdur<.'S featured or (ii) by the manufacturer of each product to be
administered, to verify the recommended dose or formula, the method and duration of
administration, and contraindicalions. It is the responsibility of the practitioner, relying on their
own experience and knowledge of the patient, to make diagnoses, to determine dosages and the
best treatment for each individual patient, and to take all approprillte safety precautions. To the
fullest extent of the law, neither the Publisher nor the IEditorsl Authorslldelete as appropriate)
IIMum<::J IIny lillbility for IIny injury <IndIo. damage to persons Or property arising out Or
relat<.>d to any usc of the material contained in this book.
The Publisher
Previous edition copyrighted 2001 by Saunders
ISBN-13 978-0-7216-2825-7
ISBN 0-7216-2825-7
Publishing Direc/or: Lindll Duncan
Edi/or: Anthony Winkel, DVM
Associlllt Developlllfntal Editor: Heather Fog!
Pl/bUs/rillg Services Malraser: Pat Joiner
Sellior Project Mmragrr: Kllren M. Rehwinkel
Designer: Teresa MclkYllll
Working to grow
libraries in counrnes
Printed in Chin.1
L..1St digit is the print number: 9 8 7 6 5 4 3 2 I
Contributor
Kimberly S. Coyner, DVM, DACVO
Associate Veterinary Dermatologist
Dermatology Clinic for Animals
Mesa, Arizona
v

Preface
This atlas began as a companion text for Muller and diagnostic test findings, and therapies for each disor
Kirk's Small Animal Dermatology. We designed the book der. Veterinary dermatology is a specialty that relies
to be a complete color atlas that included current treat greatly on therapies tailored to each patient's needs.
ments for each disorder. Great effort has gone into This makes listing treatment options for select diseases
making this book an easy-ta-use reference for practic very difficult; however, we endeavored to provide
ing small animal veterinarians. sufficient guidance so that practitioners can success
The text is organized into chapters based on disease fully manage their patient's complaints. To help with
etiologies similar to Muller and Kirk's 5mal1 Ailima/ dispensing treatments, four appendices have been
Dermatology. Since many diseases can present with included that provide useful product information. In
similar lesions, we devoted the first chapter to differ addition, multiple tables have been incorporated into
ential diagnoses for common clinical presentations. select chapters that provide direction for the treatment
We hope that this chapter will help the practitioner of certain disorders.
formulate a workable rule-out list from which a final We hope that you will find this color atlas useful
diagnosis can be obtained. during your practice of veterinary dermatology.
To make this atlas a complete and useful reference,
Linda Medleau
we incorporated the clinical features, top differentials,
Keith A. Hnilica
ix

Acknowledgments
In the writing of this edition I gratefully acknowledge the assistance of Dr. Kim Coyner,
whose help was invaluable. Additionally, I would like to thank Dr. Christina Sias,
Ms. Melinda Pethel, and Ms. Tasaday Lynch. Last, but not least, a big thanks to my
co-author Dr. Keith Hnilica, for his incredible patience with me during the updating
of this edition.
Linda Medleau
My deepest appreciation goes to Jackie Davis, who brings new meaning to the defini
tion of efficiency.
Many thanks to those whose generosity made this book possible: Linda Frank, Nicola
Williamson, Elizabeth R. May, Sandra Sargent, Donna Angarano, John MacDonald,
Anthony Yu, Gail Kunkle, Michaela Austel, Craig Greene, Alice Wolfe, Karen
Campbell, Richard Malik, Lynn Schmeitzel, Patricia White, Dunbar Cram, Jim Noxon,
Linda MesSinger, Elizabeth Willis, Terese DeManuelle, William Miller, Thomas
Manning, Kimberly Boyanowski, Norma White-Weithers, Manon Paradis, Robert
Dunstan, Kelly Credille, Pauline Rakich, Charles Martin, Clay Calvert, Sherry
S.,nderson, Mary Mahaffey, Sue Mclaughlin, Edward Roberson, Cary Norsworthy,
Michael Singer, and Hillary Jackson.
Thank you all,
Keith A. Hnilica

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•
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Contents
1
CHAPTER Botryomycosis (Bacterial Pseudo mycetoma,
Differential Diagnoses, Cutaneous Bacterial Granuloma), 48
1
L-Form Infection, 49 '
Actinomycosis, 50
2
CHAPTER
Nocardiosis, 52
Diagnostic Techniques,
11 Opportunistic Mycobacteriosis (Atypical
Mycobacterial Granuloma, Mycobacterial
Panniculitis), 54
3
CHAPTER
Feline Leprosy Syndrome, 56
Bacterial Skin Diseases,
25
Canine Leproid Granuloma Syndrome (Canine
Leprosy), 58
Skin Fold Dermatitis (Intertrigo, Skin Fold
Tuberculosis, 59
Pyoderma), 26
Plague, 60
Mucocutaneous Pyoderma, 29
Pyotraumatic Dermatitis (Acute Moist Dermatitis,
4
Hot Spots), 31 CHAPTER
Fungal Skin Diseases,
Impetigo (Superficial Pustular Dermatitis), 33 63
Superficial Pyoderma (Superficial Bacterial
Folliculitis), 34 Malasseziasis (Ma/assezia Dermatitis), 64
Chin Pyoderma (Canine Acne), 38 Candidiasis (Candidosis, Thrush), 69
Dermatophytosis (Ringworm), 71
Nasal Pyoderma (Nasal Folliculitis and
Furunculosis), 40 Dermatophytic Granulomas and
Bacterial Pododermatitis (Interdigital Pyoderma, Pseudomycetomas (Majocchi's Granulomas),
79
Pedal Folliculitis, and Furunculosis), 41
Eumycotic Mycetomas (Maduromycosis), 80
Deep Pyoderma, 44
Subcutaneous Abscess (Cat and Dog Fight/Bite Phaeohyphomycosis (Chromomycosis), 81
Abscess), 46 Protothecosis, 82
xiii
xiv CONTENTS
Pythiosis, 83 Feline Rhinotracheitis Virus
Zygomycosis (Mucormycosis, (Feline Herpesvirus-I), 144
Entomophthoromycosis), 85 Feline Calicivirus Infection, 146
Lagenidiosis, 86 Feline Cowpox (Catpox). 148
Sporotrichosis, 87 Rocky Mountain Spotted Fever, 149
Blastomycosis, 89 Canine Ehrlichiosis, 151
Coccidioidomycosis, 91 Canine Neosporosis, 153
Cryptococcosis, 93 Leishmaniasis, 154
Histoplasmosis, 95
7
CHAPTER
HypersensitivIty
5
CHAPTER
Parasitic Skin Disorders, 99 Disorders, 159
Ixodid Ticks (Hard Ticks), 100 Urticaria and Angioedema (Hives), 160
Spinous Ear Tick (Otobius megnini), 101 Canine Atopy (Allergic Inhalant Dermatitis), 162
Canine Localized Demodicosis, 102 Canine Food Hypersensitivity (Canine Cutaneous
Adverse Food Reaction), 167
Canine Generalized Demodicosis, 104
Flea Allergy Dermatitis (Flea Bite
Feline Demodicosis, 109
Hypersensitivity), 173
Canine Scabies (Sarcoptic Mange), 112
Feline Atopy, 177
Feline Scabies (Notoedric Mange), 115
Feline Food Hypersensitivity (Feline Cutaneous
Cileyletiellosis (Walking Dandruff), 116
Adverse Food Reaction), 180
Ear Mites (Otodectes Cynotis), 118
Mosquito Bite Hypersensitivity, 183
Trombiculiasis (Chiggers, Harvest Mites) and
Canine Eosinophilic Furunculosis of
Straelensiosis, 120
the Face, 185
Cat Fur Mite (Lynxacarus Radosky), 122
Contact Dermatitis (Allergic Contact
Fleas, 123 Dermatitis), 186
Pediculosis (Lice), 126
8
Cuterebra, 128 CHAPTER
Autoimmune and
Fly Bite Dermatitis, 130
Myiasis, 132 Immune-Mediated Skin
Hookworm Dermatitis (Ancylostomiasis and Disorders,
189
Uncinariasis), 134
Pefodera Dermatitis (Rhabditic Dermatitis), 135
Pemphigus Foliaceus, 190
Dracunculiasis, 137
Pemphigus Erythematosus, 197
Pemphigus Vulgaris, 199
6
CHAPTER Bullous Pemphigoid, 202
Viral, Rickettsial, and
Discoid Lupus Erythematosus (DLE), 204
Protozoal Skin Diseases, 139 Systemic Lupus Erythematosus (SLE), 206
Vesicular Cutaneous Lupus Erythematosus
Canine Distemper, 140 (VCLE),210
Papillomas, 141 Sterile Nodular Panniculitis, 212