About the AuthorsJanet D. Littlewood is a Specialist Veterinary Dermatologist and Consultant at Rossdales Equine Hospital, Suffolk, UK. David H. Lloyd is Emeritus Professor of Veterinary Dermatology at the Royal Veterinary College, UK. J. Mark Craig is a Veterinary Dermatologist, Re-Fur-All Referrals, Newbury, UK.

• Preface to the second edition ixAcknowledgements xiDisclaimer xii1 The diagnostic approach 1Taking the history 1Clinical examination 3Diagnostic tests 4References and Further reading 122 Pruritus 13Contagious conditions 14Ectoparasitic infestations 14Free-living mite infestations 19Helminth infestations 23Microbial infections 24Non-contagiousconditions 26Hypersensitivity disorders 27Immune-mediated disease 35Neoplasia 35Neurogenic pruritus 35References and Further reading 363 Crusting and Scaling 37Idiopathic seborrhoeic conditions 37Secondary, acquired keratinisation and crusting disorders 40Infectious causes 40Immune-mediated causes 52Environmental causes 61Uncertain aetiology 63References and Further reading 754 Ulcers and Erosions 77Contagious causes 77Immune-mediated causes 83Congenital and hereditary causes 90Environmental causes 95Neoplastic causes 99Miscellaneous dermatoses 99References and Further reading 1055 Papules, Nodules, and Masses 106Physical conditions 106Cysts 110Viral conditions 113Bacterial infections 119Fungal infections 128Parasitic conditions 132Immune-mediated conditions 135Neoplasia 140Miscellaneous causes 154References and Further reading 1666 Coat Problems 168Alopecia 168Other abnormalities 178References and Further reading 182Contents vii7 Pigmentary Disorders 183Genetics of skin and coat colour 183Hypopigmentation disorders 185Hyperpigmentation 192References and Further reading 1928 Therapy in Equine Dermatology 193Availability of veterinary medicines for equine patients 193References and Further reading 194Index 196

About the AuthorsJanet D. Littlewood is a Specialist Veterinary Dermatologist and Consultant at Rossdales Equine Hospital, Suffolk, UK. David H. Lloyd is Emeritus Professor of Veterinary Dermatology at the Royal Veterinary College, UK. J. Mark Craig is a Veterinary Dermatologist, Re-Fur-All Referrals, Newbury, UK.

• Preface to the second edition ixAcknowledgements xiDisclaimer xii1 The diagnostic approach 1Taking the history 1Clinical examination 3Diagnostic tests 4References and Further reading 122 Pruritus 13Contagious conditions 14Ectoparasitic infestations 14Free-living mite infestations 19Helminth infestations 23Microbial infections 24Non-contagiousconditions 26Hypersensitivity disorders 27Immune-mediated disease 35Neoplasia 35Neurogenic pruritus 35References and Further reading 363 Crusting and Scaling 37Idiopathic seborrhoeic conditions 37Secondary, acquired keratinisation and crusting disorders 40Infectious causes 40Immune-mediated causes 52Environmental causes 61Uncertain aetiology 63References and Further reading 754 Ulcers and Erosions 77Contagious causes 77Immune-mediated causes 83Congenital and hereditary causes 90Environmental causes 95Neoplastic causes 99Miscellaneous dermatoses 99References and Further reading 1055 Papules, Nodules, and Masses 106Physical conditions 106Cysts 110Viral conditions 113Bacterial infections 119Fungal infections 128Parasitic conditions 132Immune-mediated conditions 135Neoplasia 140Miscellaneous causes 154References and Further reading 1666 Coat Problems 168Alopecia 168Other abnormalities 178References and Further reading 182Contents vii7 Pigmentary Disorders 183Genetics of skin and coat colour 183Hypopigmentation disorders 185Hyperpigmentation 192References and Further reading 1928 Therapy in Equine Dermatology 193Availability of veterinary medicines for equine patients 193References and Further reading 194Index 196

About the AuthorsJanet D. Littlewood is a Specialist Veterinary Dermatologist and Consultant at Rossdales Equine Hospital, Suffolk, UK. David H. Lloyd is Emeritus Professor of Veterinary Dermatology at the Royal Veterinary College, UK. J. Mark Craig is a Veterinary Dermatologist, Re-Fur-All Referrals, Newbury, UK.

• Preface to the second edition ixAcknowledgements xiDisclaimer xii1 The diagnostic approach 1Taking the history 1Clinical examination 3Diagnostic tests 4References and Further reading 122 Pruritus 13Contagious conditions 14Ectoparasitic infestations 14Free-living mite infestations 19Helminth infestations 23Microbial infections 24Non-contagiousconditions 26Hypersensitivity disorders 27Immune-mediated disease 35Neoplasia 35Neurogenic pruritus 35References and Further reading 363 Crusting and Scaling 37Idiopathic seborrhoeic conditions 37Secondary, acquired keratinisation and crusting disorders 40Infectious causes 40Immune-mediated causes 52Environmental causes 61Uncertain aetiology 63References and Further reading 754 Ulcers and Erosions 77Contagious causes 77Immune-mediated causes 83Congenital and hereditary causes 90Environmental causes 95Neoplastic causes 99Miscellaneous dermatoses 99References and Further reading 1055 Papules, Nodules, and Masses 106Physical conditions 106Cysts 110Viral conditions 113Bacterial infections 119Fungal infections 128Parasitic conditions 132Immune-mediated conditions 135Neoplasia 140Miscellaneous causes 154References and Further reading 1666 Coat Problems 168Alopecia 168Other abnormalities 178References and Further reading 182Contents vii7 Pigmentary Disorders 183Genetics of skin and coat colour 183Hypopigmentation disorders 185Hyperpigmentation 192References and Further reading 1928 Therapy in Equine Dermatology 193Availability of veterinary medicines for equine patients 193References and Further reading 194Index 196