Small Animal Dermatology, 3rd edition

460 DISEASES/DISORDERS

Exercise intolerance

Severe weight loss and anorexia

Emaciation/chronic wasting

Polymyositis and muscle atrophy

Diarrhea, vomiting

Epistaxis and melena

Renal failure (polyuria, polydipsia, vomiting)

Neuralgia

Lameness due to polyarthritis, osteolytic lesions, and proliferative periostitis

Pyrexia

Splenomegaly

Ocular disease (blepharitis, conjunctivitis, anterior uveitis, retinitis, keratocon-

junctivitis sicca).

 Cutaneous:
Exfoliative dermatitis: may be localized, regional, generalized; symmetric or

asymmetric; may be similar to pemphigus foliaceus (Figures 30.1, 30.2)

Ulcerative dermatitis: erosions leading to indolent ulcers; solitary or multiple;

pinnae, nasal planum, mucocutaneous junctions, pressure points, and footpads

(Figure 30.3)

Nodular dermatitis: solitary or multiple; often nonulcerated; more common in

boxers; nodules located at areas of parasite inoculation may be painful (Fig-

ure 30.4)

Pustular dermatitis, often pruritic: small pustules leading to collarettes; most

often on glabrous skin

Papular dermatitis: nonpainful and nonpruritic, discrete to coalescing papules;

most often on glabrous skin

Regional (especially facial) alopecia

Cutaneous depigmentation

Nasodigital hyperkeratosis

Onychogryphosis: hypertrophy and abnormal curvature of claws

Lesions are typically nonpruritic unless secondarily infected

Secondary dermatoses including bacterial folliculitis and demodicosis may

develop.

DIFFERENTIAL DIAGNOSIS

 Visceral:
Mycoses (blastomycosis, histoplasmosis)
Systemic lupus erythematosus
Ehrlichiosis
Anaplasmosis
Rickettsiosis
Bartonellosis
Babesiosis