title: Citrobacter koseri folliculitis of the face.
abstract: We report a case of severe Citrobacter koseri folliculitis of the face in a boy with acne. A 15-year-old boy affected by acne was admitted because of a rash located on the face. Dermatological examination revealed two large plaques, with numerous pustules, eschars and crusts, located bilaterally and symmetrically on the cheeks. Three bacteriological examinations were positive for C. koseri. The patient was successfully treated with i.m. ceftriaxone. C. koseri is a Gram-negative, aerobic, mobile, nonsporulating bacillus belonging to the Enterobacteriaceae family. It can cause meningitis, central nervous system abscess and sepsis, almost exclusively in infants and immunocompromised hosts. Respiratory tract and urinary infections have been reported in elderly people. Furthermore, rare cases of skin infections have been described.
authors: Department of Pathophysiology and Transplantation, Institute for Treatment and Research Cà Granda Ospedale Maggiore Policlinico Foundation, Università degli Studi di Milano, Via Pace 9, 20122, Milan, Italy. danny2003@libero.it.
authors: D D
authors: DD
authors: Raia
authors: Department of Pathophysiology and Transplantation, Institute for Treatment and Research Cà Granda Ospedale Maggiore Policlinico Foundation, Università degli Studi di Milano, Via Pace 9, 20122, Milan, Italy.
authors: M
authors: M
authors: Barbareschi
authors: Department of Pathophysiology and Transplantation, Institute for Treatment and Research Cà Granda Ospedale Maggiore Policlinico Foundation, Università degli Studi di Milano, Via Pace 9, 20122, Milan, Italy.
authors: S
authors: S
authors: Veraldi
mesh_terms: D000293:Adolescent; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002443:Ceftriaxone / Q000627:therapeutic use; D041041:Citrobacter koseri / Q000302:isolation & purification*; D004756:Enterobacteriaceae Infections / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology / Q000473:pathology*; D005145:Face / Q000473:pathology*; D005499:Folliculitis / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology / Q000473:pathology*; D006801:Humans; D008297:Male; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents; D002443:Ceftriaxone
keywords: Acne; Acne fulminans; Citrobacter koseri; Folliculitis
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