Frequency of the Types of Alopecia at Twenty-Two Specialist Hair Clinics: A Multicenter Study
Journal
Skin Appendage Disorders
ISSN
2296-9195
2296-9160
Date Issued
2019
Author(s)
Sergio Vañó-Galván
David Saceda-Corralo
Ulrike Blume-Peytavi
Jose Cucchía
Ncoza C. Dlova
Maria Fernanda Reis Gavazzoni Dias
Ramon Grimalt
Daniela Guzmán-Sánchez
Matthew Harries
Anthony Ho
Susan Holmes
Anisa Mosam
Rui Oliveira-Soares
Giselle M. Pinto
Bianca M. Piraccini
Rodrigo Pirmez
Daniel De la Rosa Carrillo
Lidia Rudnicka
Jerry Shapiro
Rodney Sinclair
Antonella Tosti
Ralph M. Trüeb
Annika Vogt
Mariya Miteva
Type
Resource Types::text::journal::journal article
URL Institutional Repository
Abstract
<jats:p><b><i>Background:</i></b> The frequency of different types of alopecia is not clearly reported in recent studies. <b><i>Objective:</i></b> To analyze the frequency of the types of alopecia in patients consulting at specialist hair clinics (SHC) and to assess for global variations. <b><i>Methods:</i></b> Multicenter retrospective study including data from patients evaluated at referral SHC in Europe, America, Africa and Australia. <b><i>Results:</i></b> A total of 2,835 patients (72.7% females and 27.3% males) with 3,133 diagnoses of alopecia were included (73% were non-cicatricial and 27% were cicatricial alopecias). In all, 57 different types of alopecia were characterized. The most frequent type was androgenetic alopecia (AGA) (37.7%), followed by alopecia areata (AA) (18.2%), telogen effluvium (TE) (11.3%), frontal fibrosing alopecia (FFA) (10.8%), lichen planopilaris (LPP) (7.6%), folliculitis decalvans (FD) (2.8%), discoid lupus (1.9%) and fibrosing alopecia in a pattern distribution (FAPD) (1.8%). There was a male predominance in patients with acne keloidalis nuchae, dissecting cellulitis and FD, and female predominance in traction alopecia, central centrifugal cicatricial alopecia, FFA, TE, FAPD and LPP. <b><i>Conclusion:</i></b> AGA followed by AA and TE were the most frequent cause of non-cicatricial alopecia, while FFA was the most frequent cause of cicatricial alopecia in all studied geographical areas.</jats:p>
Subjects
hair diseases
;
alopecia
;
androgenetic alopecia
;
alopecia areata
;
frontal fibrosing alopecia
;
telogen effluvium
;
folliculitis decalvans
;
lichen planopilaris
;
epidemiology
;
acne
;
acne keloidalis nuchae
;
adolescent
;
adult
;
aged
;
alopecia
;
alopecia areata
;
article
;
central centrifugal cicatricial alopecia
;
child
;
consultation
;
discoid lupus erythematosus
;
dissecting cellulitis
;
female
;
folliculitis
;
folliculitis decalvans
;
frontal fibrosing alopecia
;
gender
;
human
;
lichen planopilaris
;
major clinical study
;
male
;
male type alopecia
;
medical specialist
;
multicenter study (topic)
;
patient referral
;
priority journal
;
retrospective study
;
telogen effluvium
;
traction alopecia