Recurrent Inverse Necrotizing Infundibular Crystalline Folliculitis
April 2024
in “
Journal of Cutaneous Pathology
”
necrotizing infundibular crystalline folliculitis folliculitis epidermal-derived growth factor vascular endothelial-derived growth factor PD-1 inhibitors sebaceous gland dysfunction EGFR signaling follicular epithelium rupture neutrophilic inflammation crystal deposits epidermal growth factor vascular endothelial growth factor programmed death-1 inhibitors epidermal growth factor receptor signaling
TLDR Recurrent NICF is a rare skin condition with unclear causes, involving follicle inflammation and crystal deposits.
This case study discusses a rare condition known as necrotizing infundibular crystalline folliculitis (NICF), characterized by folliculocentric papules in seborrheic areas. Only 23 cases have been documented, with some linked to specific drug therapies. The condition involves bacterial or yeast colonization, and its cause is unclear, though it may involve microbiome imbalances, sebaceous gland issues, and disrupted EGFR signaling. Histopathology shows follicular rupture, inflammation, and crystal deposits. The study presents a case of recurrent NICF in the inguinal region, highlighting its spontaneous occurrence. No conflicts of interest were reported by the authors.