Crystalline folliculitis revealed by non-aqueous staining technique

Dermatol Online J. 2017 Jul 15;23(7):13030/qt1358h014.

Abstract

Necrotizing infundibular crystalline folliculitis (NICF) is a rare superficial folliculitis characterized by expansive deposits of birefringent crystallized lipid. We report a case of NICF in a transplant patient presenting with folliculocentric acneiform papules across the lateral face and neck. Biopsy demonstrated intrafollicular crystalline deposits within an intact epidermis. Diagnostic crystals were identified using a non-aqueous histologic technique involving thick unstained sections. To our knowledge, this is the first report of NICF in a transplant patient. Our case suggests NICF is a follicular disorder and highlights a technique that may prevent loss of birefringent crystals and assist in facilitating accurate diagnosis.

Publication types

  • Case Reports

MeSH terms

  • Biopsy
  • Crystallization
  • Facial Dermatoses / pathology*
  • Female
  • Folliculitis / diagnosis*
  • Folliculitis / pathology
  • Humans
  • Immunocompromised Host
  • Middle Aged
  • Necrosis
  • Staining and Labeling / methods*