title: Pityrosporum folliculitis: diagnosis and management in 6 female adolescents with acne vulgaris.
abstract: BACKGROUND
  Pityrosporum folliculitis is a common inflammatory skin disorder that may mimic acne vulgaris. Some adolescents with recalcitrant follicular pustules or papules may have acne and Pityrosporum folliculitis simultaneously. Clinical response is dependent on treating both conditions.
  
  
  OBJECTIVE
  To demonstrate the similarity in clinical manifestation between acne vulgaris and Pityrosporum folliculitis, the benefit of potassium hydroxide preparation, and the benefit of appropriate antifungal therapy.
  
  
  METHODS
  We describe 6 female adolescents with concurrent Pityrosporum folliculitis infection and acne vulgaris.
  
  
  METHODS
  A potassium hydroxide examination was performed on all 6 patients from the exudate of follicular pustules exhibiting spores consistent with yeast. All patients were treated with oral antifungals, and 5 of the 6 patients were also treated with topical antifungals.
  
  
  RESULTS
  Six of 6 patients improved with antifungal treatment. All patients also required some ongoing therapy for their acne.
  
  
  CONCLUSIONS
  These patients demonstrate that follicular papulopustular inflammation of the face, back, and chest may be due to a combination of acne vulgaris and Pityrosporum folliculitis, a common yet less frequently identified disorder. Symptoms often wax and wane depending on the patient's activities, time of the year, current treatment regimens, and other factors. Pityrosporum folliculitis will often worsen with traditional acne therapy and dramatically respond to antifungal therapy.
authors.affiliation: Division of Dermatology, Department of Medicine, University of Massachusetts Medical School, Worcester 01605, USA.
authors.forename: Katherine
authors.initials: K
authors.lastname: Ayers
authors.forename: Susan M
authors.initials: SM
authors.lastname: Sweeney
authors.forename: Karen
authors.initials: K
authors.lastname: Wiss
mesh_terms: D000152:Acne Vulgaris / Q000150:complications / Q000175:diagnosis; D000293:Adolescent; D000935:Antifungal Agents / Q000627:therapeutic use; D003881:Dermatomycoses / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology*; D003937:Diagnosis, Differential; D005260:Female; D005499:Folliculitis / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy / Q000382:microbiology*; D006801:Humans; D006878:Hydroxides; D008290:Malassezia; D017680:Potassium Compounds
chemical_list: D000935:Antifungal Agents; D006878:Hydroxides; D017680:Potassium Compounds; C029943:potassium hydroxide