NAVLE Integumentary

Canine Diseases of Claws Study Guide

Diseases of the claw and claw bed represent an important but often overlooked category of dermatologic conditions in canine practice.

Overview and Clinical Importance

Diseases of the claw and claw bed represent an important but often overlooked category of dermatologic conditions in canine practice. While claw diseases account for only approximately 1.3% of dermatology presentations, they can cause significant pain, lameness, and secondary complications including osteomyelitis.

The canine claw consists of a hard keratinized outer shell protecting the underlying quick (blood vessels, nerves, and ungual crest of P3). The coronary band at the base is the growth center - damage here permanently affects claw growth.

Term Definition
Onychia/Onychitis Inflammation of the claw unit
Paronychia Inflammation or infection of the claw fold (tissue surrounding claw)
Onychodystrophy Abnormal claw formation - changes to shape, texture, growth
Onychomadesis Sloughing or shedding of the claw from nail bed
Onychorrhexis Brittle claws that split or break easily
Onychogryphosis Hypertrophy and abnormal curvature of the claw
Onycholysis Separation of claw from underlying nail bed
Trachyonychia Roughened, lustreless surface of the claw
Onychomycosis Fungal infection of the claw
Onychomalacia Softening of the claw

Essential Terminology

Understanding claw disease terminology is critical for effective communication:

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