JOURNAL ARTICLE

Fibrosing Alopecia in a Pattern Distribution (FAPD) in 16 African-Descent and Hispanic Female Patients: A Challenging Diagnosis

Marcelo de Souza Teixeira, Maria Fernanda Reis Gavazzoni Dias, Ralph M Trüeb, Mayra Carrijo Rochael, Enoi Aparecida Guedes Vilar
Skin Appendage Disorders 2019, 5 (4): 211-215
31367598

Background: Fibrosing alopecia in a pattern distribution (FAPD) has only been described in Caucasian patients, and it is not clear whether it can develop in dark-skin ethnicities.

Materials and Methods: Sixteen Brazilian female patients, 12 of African descent and 4 Hispanic, with progressive scarring alopecia in a pattern distribution were analyzed.

Results: Dermatoscopic features showed perifollicular erythema and scaling (14/16), hair fiber diameter diversity (16/16), loss of follicular ostia (16/16), and follicular keratosis (3/16). Late stages showed a honeycomb pigmented network (12/16), a hyperpigmented perifollicular halo (12/16), and small white patches (12/16). Histopathological features showed lichenoid perifollicular infiltrate (14/16), follicular miniaturization (16/16), concentric fibrosis (16/16), perifollicular lymphocytic infiltrate (16/16), and vellus hair involvement (10/16). Premature desquamation of the inner root sheath was found in 11 patients.

Conclusions: The concomitant findings of cicatricial pattern hair loss (with or without the recess of the front hair line), hair fiber diversity, perifollicular erythema and scaling, a whitish perifollicular halo, and histological findings of androgenetic alopecia, with vacuolar interface alteration of the upper portion of the follicular epithelium, are the main key features to suggest the diagnosis of FAPD. FAPD is a possible diagnosis in patients of color with cicatricial pattern hair loss. Clinical, dermatoscopic, and histopathological examination allow a proper final differential diagnosis.

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