Lichen Spinulosus Clinical Presentation

Updated: Jun 15, 2022
  • Author: Christopher R Gorman, MD; Chief Editor: William D James, MD  more...
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Physical Examination

Patches and plaques of follicular papules have a diameter that ranges from 2-5 cm. Patches are distributed symmetrically over the integument. Patches affect the neck, buttocks, abdomen, trochanters, knees, and extensor surfaces of the arms.

Individual papules are flat to conical. Individual papules usually are small, approximately 1-3 mm in diameter. Papules have a pointed or hairlike horny spine that extends approximately 1 mm around the tip of the follicle. When a patch is rubbed gently with the fingers, it feels similar to a nutmeg grater.