What are the physical findings of nail involvement in lichen planus?

Updated: Feb 24, 2020
  • Author: Tsu-Yi Chuang, MD, MPH, FAAD; Chief Editor: William D James, MD  more...
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Answer

Nail findings are found in roughly 10% of patients with lichen planus. Thes findings are most commonly longitudinal grooving and ridging. Hyperpigmentation, subungual hyperkeratosis, onycholysis, and longitudinal melanonychia can result from lichen planus. Rarely, inflammation may result in permanent destruction of the nail matrix with subsequent pterygium formation. Lichen planus has been linked to childhood idiopathic nail atrophy and may overlap with twenty-nail dystrophy of childhood.


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