Small Animal Dermatology, 3rd edition

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 433  Primary “seborrhea” (primary keratinization disorder; idiopathic sebor ...

434 DISEASES/DISORDERS parakeratosis of Labrador retrievers (begins at less than 1 year of age; often more severe) (Figure 29.14 ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 435 erythema, and erosions on distal extremities and mucocutaneous junctions ...

436 DISEASES/DISORDERS CLINICAL FEATURES  Syndromes may be visually distinctive or appear very similar.  Focal or generalized, ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 437  Cytology of skin surface: bacteria folliculitis and/orMalasseziadermat ...

438 DISEASES/DISORDERS Alpha-hydroxy acids (e.g., glycolic acid): enhances desmosomal breakdown only within the stratum corneum ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 439 COMMENTS  Corticosteroids: may be used judiciously to control inflammat ...

440 DISEASES/DISORDERS Fig. 29.1.Nonepidermolytic icthyosis seen as large rafts of scale on the dorsum of a 4-year-old Labrador ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 441 Fig. 29.3.Icthyosis in a 5-year-old male-castrate American bulldog. Les ...

442 DISEASES/DISORDERS Fig. 29.5.Nasal parakeratosis: the nasal planum is hypopigmented with tightly adherent crusts over erosi ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 443 Fig. 29.7.Multiple patches of thick and adherent scale on the pinnal ma ...

444 DISEASES/DISORDERS Fig. 29.9.Lichenification, erythema, and exudation in the axilla and medial foreleg due toMalasseziader- ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 445 Fig. 29.11.Severe and generalized epidermal dysplasia in a 10-year-old ...

446 DISEASES/DISORDERS Fig. 29.13.Hyperpigmentation, lichenification, and exudation consistent with acanthosis nigricans affect ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 447 Fig. 29.15.Thickened footpads with accumulations of keratin into “horns ...

448 DISEASES/DISORDERS Fig. 29.17.Severe zinc-responsive dermatitis and secondaryMalasseziadermatitis in a 2-year-old female- s ...

CHAPTER 29 KERATINIZATION (CORNIFICATION) DISORDERS 449 Fig. 29.19.Hair shaft from a dog with color dilution alopecia. Melanoso ...

450 DISEASES/DISORDERS Fig. 29.21.Sebaceous adenitis producing alopecia and adherent crusts on the dorsum of an 18-month-old fe ...

Fig. 29.23.Tightly adherent crusts surrounding hair shafts termed “keratin collaring” as seen in sebaceous adenitis. (a) (b) F ...

452 DISEASES/DISORDERS Fig. 29.25.Numerous adherent crusts protruding from follicles in a 5-year-old male-castrate miniature sc ...