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Pruritic Canine Dermatoses Pruritic Feline Dermatoses 1273

Pruritic Canine Dermatoses
VetBooks.ir Disease Site Lesions

Flea allergy dermatitis C, R, S Bilaterally symmetrical, dorsal lumbosacral, caudal Papules, macules, alopecia, erythema, lichenification,
thighs, groin, axilla, caudal half of body hyperpigmentation, excoriations, fibropruritic nodules
Canine scabies C Ventrum, pinnae margins, face, elbows, partially Macules, papules, erythema, alopecia, crusts, excoriations
bilaterally symmetrical
Demodicosis C Periorbital, commissures of mouth, forelegs, generalized Alopecia, erythema, crusts, follicular plugging,
hyperpigmentation, secondary pyoderma
Pyoderma C Groin, axilla, ventrum, interdigital webs, generalized, Pustules, crusted papules, erythema, alopecia, target lesions,
pressure points coalescing collarettes, hyperpigmentation
Atopic dermatitis C, S Face, periorbital, ears, caudal carpi and tarsi, feet Erythema, alopecia, excoriations, lack of primary lesions,
(dorsum), otitis externa, axillae, generalized lichenification, hyperpigmentation
Malassezia dermatitis C, R, S Ventral neck, groin, skin folds, face, feet, ventrum Erythema, exudative or dry, alopecia, hyperpigmentation,
lichenification
Otodectic acariosis (ear mites) C Ear canal, pinnae Erythema, brown otic discharge, excoriation, alopecia
Food allergy L Face, feet, ears, generalized Erythema, alopecia, excoriations, lack of primary lesions
Cheyletiellosis L, R Dorsum of thorax, generalized Large scales, crusts, alopecia, erythema
Cornification defects L Generalized, ears, preen body Scales, crusts, alopecia, erythematous plaques
Acral lick dermatitis L Anterior carpal, metacarpal, radial, metatarsal, tibial Firm alopecic plaque, central irregular ulcer, hyperpigmented
regions halo
Contact dermatitis U Hairless areas, feet (ventrum), genitals, groin, axilla, Erythema, exudation, lichenification, hyperpigmentation, Differentials, Lists,
generalized papules and Mnemonics
Drug eruptions U Anywhere, localized or generalized, face, ears, scrotum Pleomorphic, erythema, papules, coalescing target lesions
Pediculosis U, R, S Dorsum, generalized Scales, crusts, alopecia, papules
Harvest mites (chiggers, trombiculiasis) U, R, S Ventrum, legs, anywhere Erythema, scales, crusts, papules, alopecia
Endoparasitic migration in puppies U Face, feet, generalized Erythema, alopecia, excoriations, lack of primary lesions
Pelodera dermatitis U, R, S Ventrum, legs, groin Erythema, papules, alopecia, crusts
Superficial necrolytic dermatitis Footpads, face, mucocutaneous junctions, genitals, groin Adherent crusts, ulcers, erythema, excoriations, fissured pads
(hepatocutaneous syndrome) U
Epitheliotropic lymphoma U Mucocutaneous, generalized Erythema, alopecia, scaling, ulcers, nodules
Calcinosis cutis U Dorsal neck, anywhere Papules, plaques, erythema, crusting
Tail-dock neuroma U Previously docked tail Erythema, excoriations, alopecia
C, Common; L, less common; R, regional (geographically variable); S, seasonal; U, uncommon.
Modified from Ettinger S, Feldman E: Textbook of veterinary internal medicine, ed 6, St. Louis, 2005, Saunders.

Pruritic Feline Dermatoses

Disease Site Lesions
Flea allergy dermatitis C, R, S Neck, dorsum, lumbosacral, caudal and medial thighs, “Miliary dermatitis,” erythema, alopecia, eosinophilic
groin, ears plaques
Eosinophilic plaque C, R, S Ventral abdomen, medial thighs, anywhere Raised, ulcerated, erythematous alopecic plaques
secondary to allergy (primarily flea allergy dermatitis)
Otodectic acariosis (ear mites) C Ears, head, neck, rarely generalized Otitis externa, excoriations, “miliary dermatitis”
Food allergy C Head, neck, ears, generalized Erythema, excoriations, alopecia, lack of primary lesions,
“miliary dermatitis,” eosinophilic plaque
Self-induced pruritic hair loss (atopic dermatitis, Bilaterally symmetrical, caudal and lateral thighs, ventral Alopecia, hair stubble, erythema, papules, underlying skin
food allergy, flea allergy) L abdomen, perineum may be normal
Atopic dermatitis L, S Head, neck, ears, generalized “Miliary dermatitis,” erythema, excoriations, alopecia,
eosinophilic plaque
Continued

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