The Merck Veterinary Manual

Integumentary System

Integumentary System Introduction

Introduction

Skin, with hair

Congenital And Inherited Anomalies Of The Integumentary System

Congenital Anomalies of the Skin

Epitheliogenesis imperfecta, foal

Collagenous nevus, dog

Dermoid cyst, dog

Follicular cyst, dog

Hereditary Alopecia and Hypotrichosis

Color dilution alopecia, Doberman

Pigmentary Abnormalities

Vitiligo, Golden Retriever

Defects of Structural Integrity

Cutaneous asthenia, cat

Junctional epidermolysis bullosa, horse

Cutaneous Manifestations of Multisystemic and Metabolic Defects

Familial dermatomyositis, Collie

Dermatomyositis, skin

Dermatomyositis, muscle

Bovine hereditary zinc deficiency

Urticaria

Introduction

Urticaria, horse

Dermatophilosis

Introduction

Dermatophilus congolense infection, cow

Dermatophilosis, horse

Dermatophilus congolense infection, horse

Exudative Epidermitis

Introduction

Chronic exudative epidermitis

Exudative epidermitis, greasy"" lesion, pig""

Subacute exudative epidermitis

Interdigital Furunculosis

Introduction

Interdigital furunculosis, dog

Pyoderma

Introduction

Superficial pyoderma, dog

Contagious Ecthyma

Introduction

Contagious ecthyma, goat

Pox Diseases

Cowpox

Cowpox ulcer

Pseudocowpox

Parapox virus, pseudocowpox

Lumpy Skin Disease

Lumpy skin disease, ulcers

Sheeppox and Goatpox

Sheep poxvirus

Sheeppox lesions

Swinepox

Swinepox lesions

Poxvirus Infection in Cats

Cowpox lesions, cat

Cowpox virus, chorioallantoic membrane

Dermatophytosis

Introduction

Dermatophytosis, Beagle

Dermatophytosis, cow

Cattle Grubs

Hypoderma spp

Hypoderma bovis

Hypoderma spp, 3rd stage larva

Dermatobia Hominis

Dermatobia hominis, skin lesions

Dermatobia hominis, larvae

Vitiligo, Golden Retriever

Dermatobia, scars on leather

Lechiguana

Lechiguana, subcutaneous mass

Cuterebrainfestation In Small Animals

Introduction

Cuterebra larva

Fleas And Flea Allergy Dermatitis

Introduction

Ctenocephalides felis, female

Ctenocephalides felis, male

Ctenocephalides spp, larvae

Flies

Dipterans with Biting Mouthparts

Biting Midges

Culicoides sensitivity, horse

Horse Flies and Deer Flies

Tabanus spp (horse fly)

Stable Flies

Stomoxys calcitrans (stable fly)

Horn Flies

Haematobia irritans (adult horn fly)

Sheep Keds

Melophagus ovinus (sheep ked)

Melophagus ovinus, sheep

Dipterans with Nonbiting Mouthparts

Face Flies

Face fly Musca autumnalis

Dipterans that Produce Myiasis

Obligatory Myiasis-producing Flies

Cochliomyia hominivorax

Cochliomyia hominivorax (screwworm) adult fly

Helminths Of The Skin

Cutaneous Habronemiasis

Habronemiasis, stallion

Cutaneous habronemiasis, horse

Elaeophorosis

Elaeophora schneideri, sheep

Onchocerciasis

Onchocerca-associated dermatitis, horse

Pelodera Dermatitis

Pelodera strongyloides dermatitis, dog

Stephanofilariasis

Cutaneous stephanofilariasis

Lice

Introduction

Louse eggs or ""nits""

Cattle biting louse, Damalinia (Bovicola) bovis, skin

Damalinia bovis, female

Damalinia bovis, male

Long-nosed cattle louse, Linognathus vituli, skin

Linognathus vituli, female

Linognathus vituli, male

Short-nosed cattle louse, Haematopinus eurysternus, skin

Haematopinus eurysternus, female

Haematopinus eurysternus, male

Little blue cattle louse, Solenopotes capillatus, dewlap

Solenopotes capillatus, female

Solenopotes capillatus, male

Horse sucking louse, Haematopinus asini

Horse biting louse, Damalinia (Bovicola) equi

Damalinia equi nits

Hog louse, Haematopinus suis, skin

Haematopinus suis, female

Haematopinus suis, male

Sheep biting louse, Damalinia (Bovicola) ovis

Dog sucking louse, Linognathus setosus, female

Dog sucking louse, Linognathus setosus, male

Mange

Mange in Cattle

Sarcoptic mange, hind legs, cow

Bovine sarcoptic mange

Sarcoptes scabiei var bovis, female

Sarcoptes scabiei var bovis, male

Psoroptes ovis, female

Psoroptes ovis, male

Chorioptic mange, cow

Chorioptes bovis, female

Chorioptes bovis, male

Demodex bovis, skin lesions

Mange in Sheep and Goats

Psoroptic mange, sheep

Mange in Horses

Chorioptic mange, horse

Neotrombicula autumnalis

Mange in Pigs

Sarcoptic mange, pig

Sarcoptes scabiei var suis

Mange in Dogs and Cats

Sarcoptic mange, dog

Sarcoptes scabiei var canis

Cheyletiellosis (walking dandruff), rabbit

Cheyletiella blakei

Canine demodicosis

Demodex canis

Ticks

Important Ixodid Ticks

Amblyomma SPP

Ambylomma haebreum

Boophilus spp

Boophilus spp, female and eggs

Dermacentor spp and Anocentor sp

Dermacentor reticularis

Dermacentor albipictus

Ixodes spp

Ixodes ricinus

Ixodes scapularis

Rhipicephalus spp

Rhipicephalus sanguineus

Important Argasid Ticks

Ornithodoros spp

Ornithodoros moubata

Otobius spp

Otobius megnini

Tumors Of The Skin And Soft Tissues

Epidermal and Hair Follicle Tumors

Squamous Cell Carcinomas

squamous cell carcinomas, dog

Squamous cell carcinoma, cow

Papillomas

Equine papillomas

Connective Tissue Tumors

Soft-tissue Sarcomas

Fibrosarcoma, parakeet

Fibrosarcoma, cat

Vascular Tumors

Cutaneous hemangiosarcoma

Lymphocytic, Histiocytic, and Related Cutaneous Tumors

Lymphoid Tumors of the Skin

Cutaneous lymphosarcoma

Cutaneous Mast Cell Tumors

Squamous cell carcinomas, cat

Mast cell tumor, dog

Tumors with Histiocytic Differentiation

Multifocal nodules, dermis and subcutaneous tissues

Tumors of Melanocytic Origin

Malignant melanoma, hamster

Malignant melanoma

Metastatic pulmonary lesions

Parakeratosis

Introduction

Parakeratosis, typical lesions

Parakeratosis, deep crusty lesions

Photosensitization

Introduction

Photosensitization, horse

Photosensitization, cow

Pityriasis Rosea In Pigs

Introduction

Pityriasis rosea, ring-like lesions

Pityriasis rosea lesions, young pig

Pityriasis rosea lesions, hind limb

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