Case and Research Letter
Chronic Lichenoid Folliculitis Decalvans
Foliculitis decalvante liquenoide crónica
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"apellidos" => "Azaña Defez" ] ] ] ] ] "idiomaDefecto" => "es" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0001731022002733?idApp=UINPBA000044" "url" => "/00017310/0000011300000010/v1_202211300529/S0001731022002733/v1_202211300529/es/main.assets" ] ] "en" => array:15 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Case and Research Letter</span>" "titulo" => " Chronic Lichenoid Folliculitis Decalvans" "tieneTextoCompleto" => true "saludo" => "To the Editor:" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "T968" "paginaFinal" => "T969" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "A. López Mateos, S. Plata Clemente, C. Guerrero Ramírez, J.M. Azaña Defez" "autores" => array:4 [ 0 => array:4 [ "nombre" => "A." "apellidos" => "López Mateos" "email" => array:1 [ 0 => "analopezmateos92@gmail.com" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor0005" ] ] ] 1 => array:3 [ "nombre" => "S." "apellidos" => "Plata Clemente" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] ] ] 2 => array:3 [ "nombre" => "C." "apellidos" => "Guerrero Ramírez" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] ] ] 3 => array:3 [ "nombre" => "J.M." "apellidos" => "Azaña Defez" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] ] ] ] "afiliaciones" => array:2 [ 0 => array:3 [ "entidad" => "Servicio de Dermatología, Hospital Clínico Universitario Virgen de la Arrixaca, El Palmar, Murcia, Spain" "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:3 [ "entidad" => "Servicio de Dermatología, Complejo Hospitalario Universitario de Albacete, Albacete, Spain" "etiqueta" => "b" "identificador" => "aff0010" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "Foliculitis decalvante liquenoide crónica" ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 485 "Ancho" => 1005 "Tamanyo" => 97646 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">A, Patch of alopecia with irregular borders and inflammatory signs (erythema and scaling) on the periphery. B, Trichoscopy reveals perifollicular scaling and erythema, with no pustules or crusts.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Folliculitis decalvans (FD) is a type of neutrophilic primary cicatricial alopecia (PCA) whose pathogenic effect is associated with a scarring response to infection by <span class="elsevierStyleItalic">Staphylococcus aureus</span> in predisposed individuals. It affects young adults, mainly males, and is characterized by the presence of pruriginous or painful plaques located mainly on the vertex, with pustules, crusting, and tufting.</p><p id="par0010" class="elsevierStylePara elsevierViewall">Recent years have seen growing interest in a type of FD with lichenoid characteristics that can appear simultaneously or during the course of the disease.</p><p id="par0015" class="elsevierStylePara elsevierViewall">A 32-year-old woman consulted for a pruriginous bald patch on her scalp. The patch had been developing over the previous 12 years. It first appeared as a scarring plaque of alopecia on the parietal region, with irregular borders and accompanied by erythema, crusting, and perifollicular scaling (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>). Histology revealed lymphocytic scarring alopecia with scant focal neutrophils. A blood workup including a study of autoimmunity was unremarkable. With a clinical diagnosis of FD, the patient underwent treatment with various regimens of topical antibiotics and corticosteroids, intralesional corticosteroids, doxycycline, rifampicin/clindamycin, oral corticosteroids, and hydroxychloroquine. The flares initially stabilized, although the disease progressed toward the posterior region (<a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a>). During follow-up, the patient experienced flares of solitary pustules at the edge of the patch, as well as follicular tufting. Given the absence of a response to therapy and the clinical-pathological correlation (symptoms suggestive of FD, but histology showing lymphocytic PCA), a second biopsy specimen was taken of the active lesions. This again revealed lymphocytic cicatricial alopecia (<a class="elsevierStyleCrossRef" href="#fig0015">Fig. 3</a>).</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><elsevierMultimedia ident="fig0015"></elsevierMultimedia><p id="par0020" class="elsevierStylePara elsevierViewall">The North American Hair Research Society classification of PCA according to the predominant cell in the inflammatory infiltrate<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">1</span></a> has led lichen planopilaris (LPP) and FD to be considered prototypes of lymphocytic and neutrophilic PCA, respectively. However, co-occurrence of characteristics of FD and LPP points to an FD-LPP phenotypic spectrum.</p><p id="par0025" class="elsevierStylePara elsevierViewall">In 2017, Morais et al.<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">2</span></a> reported a series of 13 patients with what they termed “lichen planopilaris with pustules”, based on the clinical presentation of erythema and perifollicular scaling, together with crusts, follicular tufts, and pustules. However, histopathology revealed that only 54% of patients had lichenoid perifolliculitis, whereas 77% had neutrophilic folliculitis and 62% tufts. More recently, Yip et al.<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">3</span></a> reported 13 patients with characteristics of FD (tufts, pustules) and of LPP (erythema and perifollicular scaling), that occurred sequentially or simultaneously. Analysis of biopsy specimens of FD revealed a perifollicular infiltrate with neutrophils, lymphocytes, and plasma cells, whereas lymphocytic inflammation was observed in the lichenoid areas. Furthermore, Egger et al.<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">4</span></a> reported on 7 patients, with clinical and trichoscopy findings of LPP, together with typical features of FD, such as follicular tufts, isolation of <span class="elsevierStyleItalic">S. aureus</span> in culture, and histologic characteristics such as compound follicular structures.</p><p id="par0030" class="elsevierStylePara elsevierViewall">Various hypotheses have been put forward to explain the overlap between these 2 entities. Yip et al.<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">3</span></a> pointed to the dysbiosis of the microbiome in FD as the trigger of collapse of the immune privilege of the hair follicle through autoantigens that could induce a lichenoid immune response. In addition, it has been proposed that signs classified as LPP could be a manifestation of a common final pathway, that the image is of an attenuated or forme frustre of FD modified by treatment,<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">5</span></a> or that the fugacity of the pustules and, therefore, of the neutrophils in the inflammatory infiltrate could lead them to be missing in histology, thus paving the way for an erroneous diagnosis of LPP. In this sense, crusts are more constant, and their presence, together with follicular tufts, reinforces the diagnosis of FD as opposed to LPP. When the neutrophils disappear, the presence of plasma cells in the inflammatory infiltrate would support the diagnosis of FD,<a class="elsevierStyleCrossRefs" href="#bib0075"><span class="elsevierStyleSup">6,7</span></a> as well as the absence of interface dermatitis and epidermal hyperplasia.<a class="elsevierStyleCrossRefs" href="#bib0085"><span class="elsevierStyleSup">8,9</span></a></p><p id="par0035" class="elsevierStylePara elsevierViewall">In the case we report, the patient's condition had lichenoid characteristics such as perifollicular scaling and erythema, as well as a lymphocytic infiltrate in the histology workup. However, the presence of crusts, follicular tufts, and the appearance of pustules during the course of the disease support a diagnosis of FD.</p><p id="par0040" class="elsevierStylePara elsevierViewall">In practice, it can prove impossible to distinguish between LPP and a lichenoid form of FD in PCA with only erythema and perifollicular hyperkeratosis. Biopsy of an area with a lichenoid appearance can reveal a lymphocytic infiltrate. However, other histology data, together with the clinical signs suggestive of FD described above, enable the diagnosis to be corrected. Recognizing this lichenoid type of FD has important implications for therapy.</p><p id="par0045" class="elsevierStylePara elsevierViewall">In conclusion, we report the case of a patient with FD characterized clinically and histologically by lichenoid traits. The case illustrates the difficulty in diagnosing this condition and the need to know the type of presentation in order to avoid a mistaken diagnosis of LPP and select appropriate therapy.</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflicts of Interest</span><p id="par0050" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:2 [ 0 => array:2 [ "identificador" => "sec0005" "titulo" => "Conflicts of Interest" ] 1 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "multimedia" => array:3 [ 0 => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 485 "Ancho" => 1005 "Tamanyo" => 97646 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">A, Patch of alopecia with irregular borders and inflammatory signs (erythema and scaling) on the periphery. B, Trichoscopy reveals perifollicular scaling and erythema, with no pustules or crusts.</p>" ] ] 1 => array:7 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 485 "Ancho" => 1005 "Tamanyo" => 112775 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">A, Progression of the patch of cicatricial alopecia, with yellowish crusts and inflammatory signs at the edges of the patch. B, Trichoscopy reveals follicular tufts.</p>" ] ] 2 => array:7 [ "identificador" => "fig0015" "etiqueta" => "Figure 3" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr3.jpeg" "Alto" => 413 "Ancho" => 1005 "Tamanyo" => 140901 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">A, Perifollicular inflammatory infiltrate, with no lesions in the epidermis (hematoxylin–eosin, ×4). B, The inflammatory infiltrate is formed mainly by lymphocytes, with scant plasma cells and no interface lesion (hematoxylin–eosin, ×10).</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0015" "bibliografiaReferencia" => array:9 [ 0 => array:3 [ "identificador" => "bib0050" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Summary of North American Hair Research Society (NAHRS)-sponsored workshop on Cicatricial Alopecia, Duke University Medical Center. February 10 and 11, 2001" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "E.A. Olsen" 1 => "W.F. Bergfeld" 2 => "G. Cotsarelis" 3 => "V.H. Price" 4 => "J. Shapiro" 5 => "R. Sinclair" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1067/mjd.2003.68" "Revista" => array:6 [ "tituloSerie" => "J Am Acad Dermatol" "fecha" => "2003" "volumen" => "48" "paginaInicial" => "103" "paginaFinal" => "110" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/12522378" "web" => "Medline" ] ] ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib0055" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Lichen planopilaris with pustules: a diagnostic challenge" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:5 [ 0 => "K.L. Morais" 1 => "C.F. Martins" 2 => "A. Anzai" 3 => "N.Y.S. Valente" 4 => "R. 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| Year/Month | Html | Total | |
|---|---|---|---|
| 2024 November | 27 | 18 | 45 |
| 2024 October | 180 | 68 | 248 |
| 2024 September | 180 | 51 | 231 |
| 2024 August | 182 | 71 | 253 |
| 2024 July | 120 | 57 | 177 |
| 2024 June | 117 | 54 | 171 |
| 2024 May | 116 | 54 | 170 |
| 2024 April | 103 | 37 | 140 |
| 2024 March | 109 | 58 | 167 |
| 2024 February | 96 | 32 | 128 |
| 2024 January | 85 | 22 | 107 |
| 2023 December | 84 | 15 | 99 |
| 2023 November | 85 | 29 | 114 |
| 2023 October | 87 | 35 | 122 |
| 2023 September | 72 | 29 | 101 |
| 2023 August | 76 | 23 | 99 |
| 2023 July | 93 | 38 | 131 |
| 2023 June | 81 | 42 | 123 |
| 2023 May | 90 | 34 | 124 |
| 2023 April | 57 | 31 | 88 |
| 2023 March | 91 | 31 | 122 |
| 2023 February | 63 | 28 | 91 |
| 2023 January | 86 | 63 | 149 |
| 2022 December | 165 | 50 | 215 |
| 2022 November | 95 | 48 | 143 |
| 2022 October | 100 | 56 | 156 |
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