Dermatological Diagnosis In Dogs. An Approach Based on Clinical Patterns
Table of Contents
1. General considerations for diagnosis based on clinical patterns Introduction Identify and define the dermatological pattern Collect basic information Establish the list of possible causes of the pattern Propose tests in a logical order 2. Defining cutaneous patterns Introduction Pathophysiological responses of the epidermis to aggressions of the skin Hyperkeratosis: alterations in the cornification process Acanthosis: epidermal hyperplasia Apoptosis Necrosis Atrophy of the epidermis Alterations in the epidermal fluid equilibrium Acantholysis Exocytosis Pathophysiological responses of the dermis to skin aggressions Pathophysiological responses of skin appendages Pathophysiological responses of the adipose tissue Cutaneous clinical patterns Focal-multifocal alopecia pattern Symmetrical alopecia pattern (regional or generalised) Scaling/crusting and seborrhoeic pattern Erosive-ulcerative pattern Vesicular papulopustular pattern Nodular pattern Pigmentary alteration pattern Pruritus 3. Focal or multifocal alopecia Introduction Underlying causes of the pattern Diagnostic procedure Analysis of the medical history General examination Dermatological examination Diagnostic protocol 4. Symmetrical alopecia (regional or generalised) Introduction Factors involved in hair growth and formation Underlying causes of the pattern Diagnostic procedure Analysis of the medical history General examination Dermatological examination Diagnostic protocol 5. Scaling/crusting and seborrhoeic pattern Introduction Underlying causes of the pattern Primary keratinisation alterations Secondary keratinisation alterations Diagnostic procedure Analysis of the medical history General examination Dermatological examination Diagnostic protocol 6. Erosive-ulcerative pattern Introduction Underlying causes of the pattern Diagnostic procedure Analysis of the medical history General examination Dermatological examination Diagnostic protocol 7. Papulopustular and vesicular pattern Introduction Underlying causes of the pattern Diagnostic procedure Analysis of the medical history General examination Dermatological examination Diagnostic protocol 8. When the clinical presentation is pruritus Introduction Pathophysiology of pruritus Causes of pruritic signs Diagnostic procedure Analysis of the medical history Characteristics of pruritus General examination Dermatological examination Diagnostic protocol Treatment 9. References