title: Perifollicular erythema as a trichoscopy sign of progression in frontal fibrosing alopecia.
abstract: BACKGROUND
  Frontal fibrosing alopecia (FFA) in an entity characterized by the recession of the frontotemporal hairline (FTHL) with alopecic scarring change. In recent years there are numerous articles discussing the usefulness of dermoscopy for the clinical diagnosis of different types of scarring alopecia.
  
  
  METHODS
  We value 79 patients diagnosed with FFA, evaluating some trichoscopical findings described as typical for FFA: Absence of follicular opening, follicular hyperkeratosis, follicular plugs and erythema.
  
  
  RESULTS
  In a population of 79 women, 100% showed no follicular opening, 72.1% follicular hyperkeratosis, 66.3% perifollicular erythema and 44.8% follicular plugs. Thus, 100% of patients had at least one of the dermoscopic elements described as suggestive of FFA, 53% two of them, 45% three and 27%, all those elements. Perifollicular erythema was present in 95% of cases in which the disease was active.
  
  
  CONCLUSIONS
  We consider that the presence of perifollicular erythema will be a direct marker of FFA activity.
authors.affiliation: Dermatology Unit, Virgen Macarena University Hospital, Spain.
authors.forename: Tomás
authors.initials: T
authors.lastname: Toledo-Pastrana
authors.affiliation: University of Seville Medical School, Seville, Spain.
authors.forename: María Jasé García
authors.initials: MJ
authors.lastname: Hernández
authors.affiliation: Dermatology Unit, Virgen Macarena University Hospital, Spain.
authors.forename: Francisco M
authors.initials: FM
authors.lastname: Camacho Martínez
keywords: Dermoscopy; diagnosis; frontal fibrosing alopecia; pattern