title: Primary perforating granulomatous folliculitis--scarring deep type.
abstract: Perforating folliculitis is characterized by asymptomatic skin-coloured or erythematous scattered and aggregated follicular papules with a central keratotic plug. Histologically, a superficial type can be distinguished from the profound type where perforations and rupture of the follicular wall take place at different levels of the hair follicle. This goes along with a granulomatous reaction of the entire pilary complex with destruction of the follicle epithelium and sebaceous gland. Often cases are associated with systemic disorders such as renal diseases or diabetes mellitus. We describe two patients with the profunda type of perforating folliculitis with scarring that manifested in early adulthood without any underlying disorders.
authors.affiliation: Department of Dermatology, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany. meral.arin@uk-koeln.de
authors.forename: Meral J
authors.initials: MJ
authors.lastname: Arin
authors.forename: Peter
authors.initials: P
authors.lastname: Kurschat
authors.forename: Gustav
authors.initials: G
authors.lastname: Mahrle
mesh_terms: D000293:Adolescent; D002921:Cicatrix / Q000209:etiology* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D005499:Folliculitis / Q000150:complications / Q000473:pathology*; D006801:Humans; D007642:Keratosis / Q000150:complications / Q000473:pathology*; D008297:Male; D012627:Sebaceous Glands / Q000473:pathology; D012867:Skin / Q000473:pathology*; D055815:Young Adult