chapter 40 Pododermatitis and Claw Disorders.........................
DEFINITION/OVERVIEW
Pododermatitis: descriptive term for dermatoses affecting the pedal region; not a final
diagnosis.
Claw Anatomy
Ungual fold: crescent-shaped tissue that surrounds the proximal claw.
Coronary band and dorsal ridge (dorsal surface of the ungual crest): produce most of
the claw; contribute to curvature of the claw.
Claw Terminology
Onychopathy: disease of claws.
Paronychia: inflammation of soft tissue around the claw.
Pachyonychia: thickening of the claw.
Onychitis: inflammation of the claw (all inclusive).
Pyonychia: purulent exudates from the claw.
Onychomycosis: fungal infection of the claw.
Onychorrhexis: brittle claws that tend to split or break.
Onychoschizia: splitting and/or lamination of the claw, usually beginning distally.
Onychomadesis: sloughing of the claws.
Onychodystrophy: deformity caused by abnormal growth.
Onychomalacia: softening of the claws.
Onychoclasis: breaking of the claw.
Onychocryptosis: ingrown claw.
Anonychia: absence of claws.
Brachyonychia: shortened claws.
Leukonychia: claw whitening.
Macronychia: unusually large claws.
Micronychia: unusually small claws.
Onychalgia: claw pain.
Onychatrophia: atrophy of claws.
Onychauxis: hypertrophy of claws.
Blackwell’s Five-Minute Veterinary Consult Clinical Companion: Small Animal Dermatology, Third Edition.
Karen Helton Rhodes and Alexander H. Werner.
©2018 John Wiley & Sons, Inc. Published 2018 by John Wiley & Sons, Inc.
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