|LETTER TO EDITOR
|Year : 2017 | Volume
| Issue : 3 | Page : 140-141
Trichoscopic features of folliculitis decalvans: Results in 58 Patients
Pablo Fernandez-Crehuet1, Sergio Vaño-Galván2, Ana Maria Molina-Ruiz3, Ana Rita Rodrigues-Barata4, Cristina Serrano-Falcón5, Antonio Martorell-Calatayud6, Salvador Arias-Santiago7, Didac Barco-Nebreda8, Salvio Serrano9, Pedro Jaén2, Francisco M Camacho-Martínez10
1 Department of Dermatology, Hospital Universitario Reina Sofía, Córdoba, Spain
2 Department of Dermatology, Hospital Ramón y Cajal, Madrid, Spain
3 Department of Dermatology, Fundación Jiménez Díaz, Madrid, Spain
4 Department of Dermatology, Grupo Pedro Jaén, Madrid, Spain
5 Department of Dermatology, Hospital de Guadix, Granada, Spain
6 Department of Dermatology, Hospital de Manises, Valencia, Spain
7 Department of Dermatology, Hospital Virgen de las Nieves, Instituto de Investigaciones Biosanitarias IBS, Hospitales Universitarios de Granada/Universidad de Granada, Granada, Spain
8 Department of Dermatology, Teknon, Barcelona, Spain
9 Dermatology Department, Universidad de Granada, Granada, Spain
10 Department of Dermatology, Virgen Macarena University Hospital, Sevilla, Spain
|Date of Web Publication||21-Aug-2017|
Unidad de Gestión Clínica de Dermatología, Hospital Universitario Reina Sofía de Córdoba, Av. Menéndez Pidal s/n. 14004, Córdoba
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Fernandez-Crehuet P, Vaño-Galván S, Molina-Ruiz AM, Rodrigues-Barata AR, Serrano-Falcón C, Martorell-Calatayud A, Arias-Santiago S, Barco-Nebreda D, Serrano S, Jaén P, Camacho-Martínez FM. Trichoscopic features of folliculitis decalvans: Results in 58 Patients. Int J Trichol 2017;9:140-1
|How to cite this URL:|
Fernandez-Crehuet P, Vaño-Galván S, Molina-Ruiz AM, Rodrigues-Barata AR, Serrano-Falcón C, Martorell-Calatayud A, Arias-Santiago S, Barco-Nebreda D, Serrano S, Jaén P, Camacho-Martínez FM. Trichoscopic features of folliculitis decalvans: Results in 58 Patients. Int J Trichol [serial online] 2017 [cited 2020 Oct 30];9:140-1. Available from: https://www.ijtrichology.com/text.asp?2017/9/3/140/213349
Folliculitis decalvans (FD) of Quinquaud is a rare form of neutrophilic scarring alopecia that presents with scarring alopecic patches with follicular pustules, crusts, and tufted hairs. The main objective of our study was to describe the trichoscopic features of FD in a large series of patients and correlate them with several relevant clinical parameters. For this purpose, we performed a descriptive, retrospective, observational, and multicenter study that included the digital trichoscopic images of 58 patients diagnosed with FD between 2001 and 2014 in 12 Spanish centers. The diagnosis of FD was established based on typical clinical and dermoscopic findings together with histopathologic confirmation in all cases. Clinical aspects and severity variables included were FD severity (I–II: <4.99 cm of maximum diameter of the scarring patch and III: 5 cm or more) and years of evolution, previous trauma, pruritus, trichodynia, tufted hairs, pustules, seborrhea, and facial papules. Both a descriptive and an analytic study to correlate these parameters with the degree of severity and other clinical variables were performed using SPSS 15.0® (SPSS 15.0 IBM, IBM Corporation, 1 New Orchard Road, Armonk, New York). The most frequent trichoscopic features are described in [Table 1]. Bivariate and multivariate logistic regression analysis adjusting by age and sex were carried out [Table 2]. Both the intraobserver and interobserver agreement for the assignment of a dermoscopic pattern for each lesion were excellent (κ = 0.7, P < 0.001, and κ = 0.75, P < 0.001, respectively).
|Table 1: Frequency of trichoscopic features of patients diagnosed with folliculitis decalvans|
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|Table 2: Trichoscopic features that evidenced association with some clinical parameters with statistical significance (P<0.05) in the bivariate and multivariate logistic regression analysis|
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We found that 95.3% of patients with mild severity presented tufted hairs, 86% perifollicular erythema, and 69.8% follicular hyperkeratosis. On the other hand, 93.3% of patients with severe FD presented perifollicular erythema, followed by tufted hairs in 86% of cases and follicular hyperkeratosis in 80%. Although we found tufted hairs frequently, we cannot conclude that is a pathognomonic tricoscopic sign of FD. No statistical association was found between the disease severity and trichoscopic findings but was positive with the presence of pustules, in concordance with the published series of Vañó-Galván et al. We also evidenced association with statistical significance (P < 0.05) between pruritus and patients with a history of FD of more than 25 years of evolution (P = 0.01). It is not known whether the higher incidence of trichodynia in the alopecia patients is due to a pathologic alteration of sensorial perception or to somatization of the anxiety and depression associated with hair loss. Remarkably, we found that the presence of follicular hyperkeratosis and hair diameter diversity were statistically associated to trichodynia in multivariate test. The presence of yellow dots was related with statistical significance (P < 0.05) with pruritus and those patients with tufted hairs presented more frequently facial papules.
The main limitations are the small number of cases, the retrospective design, the presence of only two observers, and the fact that neither the alopecia's treatment nor the activity of the disease was included in the analysis.
In conclusion, tufted hairs, perifollicular erythema, and follicular hyperkeratosis are the hallmarks trichoscopic features of FD. Patients with trichodynia presented follicular hyperkeratosis and hair diameter diversity. The presence of pustules could be a marker of severity and activity of FD.
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Conflicts of interest
There are no conflicts of interest.
| References|| |
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[Table 1], [Table 2]