Crystalline folliculitis revealed by non-aqueous staining technique
- Author(s): Siscos, Spyros Michael;
- Tran, Chi;
- Fischer, Ryan;
- Fraga, Garth
- et al.
Published Web Locationhttps://doi.org/10.5070/D3237035737
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.