What are the physical findings of nail involvement in oral lichen planus (OLP)?

Updated: Sep 15, 2020
  • Author: Jaisri R Thoppay, DDS, MBA, MS; Chief Editor: Jeff Burgess, DDS, MSD  more...
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Nail involvement (see the image below) causes pitting, subungual hyperkeratosis, longitudinal melanonychia, onychorrhexis (longitudinal ridging and grooving), onychoschizia (distal splitting), and onycholysis (separation of the nail plate from the nail bed). Permanent damage to the nail matrix can induce formation of a pterygium (scarring of the proximal nail fold to the nailbed), 20-nail dystrophy, or permanent nail loss (anonychia).

Lichen planus nail involvement. Lichen planus nail involvement.

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