title: Halo scalp ring: a case series and review of the literature.
abstract: BACKGROUND
  Halo scalp ring is an uncommonly reported alopecia of the scalp that arises perinatally.
  
  
  OBJECTIVE
  To describe 5 new cases of halo scalp ring, and to review the literature.
  
  
  METHODS
  An outpatient dermatology clinic in an urban area; patients diagnosed in a 2-year period were included in the study.
  
  
  RESULTS
  Halo scalp ring is most commonly a temporary, nonscarring alopecia that occurs in patients born to primigravidas.
  
  
  CONCLUSIONS
  Halo scalp ring is a distinctive form of alopecia attributed to caput succedaneum. It is underreported and generally has a good prognosis. However, scarring may occur.
authors.affiliation: Department of Dermatology, St Luke's-Roosevelt Hospital Center, 1090 Amsterdam Ave, Suite 11D, New York, NY 10025, USA.
authors.forename: Elizabeth L
authors.initials: EL
authors.lastname: Tanzi
authors.forename: Robin L
authors.initials: RL
authors.lastname: Hornung
authors.forename: Nanette B
authors.initials: NB
authors.lastname: Silverberg
mesh_terms: D000505:Alopecia / Q000175:diagnosis* / Q000209:etiology; D002675:Child, Preschool; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011379:Prognosis