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Vitiligo and associated autoimmune disorders: A retrospective hospital-based study in Mumbai, India
S.A. Poojary
Department of Dermatology, Venereology & Leprology, K.J. Somaiya Medical College & Hospital, Mumbai, India
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Benítez-Parejo, M.M. Rodríguez del Águila, S. Pérez-Vicente" "autores" => array:3 [ 0 => array:2 [ "nombre" => "N." "apellidos" => "Benítez-Parejo" ] 1 => array:2 [ "nombre" => "M.M." "apellidos" => "Rodríguez del Águila" ] 2 => array:2 [ "nombre" => "S." 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Papadopoulou, E. Hatziagorou, V.N. Matziou, D.D. Grigoropoulou, D.B. Panagiotakos, J.N. Tsanakas, C. Gratziou, K.N. Priftis" "autores" => array:8 [ 0 => array:2 [ "nombre" => "A." "apellidos" => "Papadopoulou" ] 1 => array:2 [ "nombre" => "E." "apellidos" => "Hatziagorou" ] 2 => array:2 [ "nombre" => "V.N." "apellidos" => "Matziou" ] 3 => array:2 [ "nombre" => "D.D." "apellidos" => "Grigoropoulou" ] 4 => array:2 [ "nombre" => "D.B." "apellidos" => "Panagiotakos" ] 5 => array:2 [ "nombre" => "J.N." "apellidos" => "Tsanakas" ] 6 => array:2 [ "nombre" => "C." "apellidos" => "Gratziou" ] 7 => array:2 [ "nombre" => "K.N." "apellidos" => "Priftis" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0301054611000048?idApp=UINPBA00004N" "url" => "/03010546/0000003900000006/v1_201304101057/S0301054611000048/v1_201304101057/en/main.assets" ] "en" => array:18 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Original article</span>" "titulo" => "Vitiligo and associated autoimmune disorders: A retrospective hospital-based study in Mumbai, India" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "356" "paginaFinal" => "361" ] ] "autores" => array:1 [ 0 => array:3 [ "autoresLista" => "S.A. Poojary" "autores" => array:1 [ 0 => array:3 [ "nombre" => "S.A." "apellidos" => "Poojary" "email" => array:1 [ 0 => "spoojary2004@gmail.com" ] ] ] "afiliaciones" => array:1 [ 0 => array:1 [ "entidad" => "Department of Dermatology, Venereology & Leprology, K.J. Somaiya Medical College & Hospital, Mumbai, India" ] ] ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0020" "etiqueta" => "Figure 4" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr4.jpeg" "Alto" => 1354 "Ancho" => 900 "Tamanyo" => 129019 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Discoid lupus erythematosus with vitiligo.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Vitiligo is characterised by the presence of depigmented macules due to the destruction of cutaneous melanocytes. The psychological impact of vitiligo on the patient can be tremendous. The exact aetiology remains obscure, but several hypotheses have been implicated: neural, autoimmune and cytotoxic.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1–3</span></a> The autoimmune aetiology of vitiligo is the most widely accepted, especially for generalised vitiligo, and forms the basis of several therapies. Frequency and type of autoimmune diseases associated with vitiligo is variable as is evident in different studies/surveys conducted across the world, probably because of the different patient populations studied.<a class="elsevierStyleCrossRefs" href="#bib0020"><span class="elsevierStyleSup">4–8</span></a> Also, studies have shown increased frequency of same autoimmune diseases in first degree relatives of the patients studied.<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> Such data indicates that individuals can be genetically predisposed to a specific group of autoimmune disorders that includes vitiligo. Our study is an attempt to focus on the coexistence of autoimmune disorders in vitiligo.</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle">Aim</span><p id="par0010" class="elsevierStylePara elsevierViewall">To study epidemiological parameters and coexistence of autoimmune disorders with vitiligo.</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle">Objectives</span><p id="par0015" class="elsevierStylePara elsevierViewall"><ul class="elsevierStyleList" id="lis0005"><li class="elsevierStyleListItem" id="lsti0005"><span class="elsevierStyleLabel">(1)</span><p id="par0020" class="elsevierStylePara elsevierViewall">To study prevalence of vitiligo in patients attending the dermatology outpatient department (OPD) during the years June 2002 to June 2008.</p></li><li class="elsevierStyleListItem" id="lsti0010"><span class="elsevierStyleLabel">(2)</span><p id="par0025" class="elsevierStylePara elsevierViewall">To study demographic variables associated with patients having vitiligo.</p></li><li class="elsevierStyleListItem" id="lsti0015"><span class="elsevierStyleLabel">(3)</span><p id="par0030" class="elsevierStylePara elsevierViewall">To study the coexistence of autoimmune disorders with vitiligo.</p></li></ul></p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle">Materials and methods</span><p id="par0035" class="elsevierStylePara elsevierViewall">Records of 33,252 new patients attending dermatology OPD between June 2002 and June 2008 were analysed retrospectively for the presence of vitiligo and coexistence of autoimmune disorders as per history and examination. The decision to select time period was random.</p><p id="par0040" class="elsevierStylePara elsevierViewall">Structured proforma was devised, and standardised information about individual subject including demographic variables and associated autoimmune diseases was collected, once the record showed the presence of vitiligo. Since our department has a vitiligo clinic, detailed information about all vitiligo patients is maintained in a register and was easily retrieved.</p><p id="par0045" class="elsevierStylePara elsevierViewall">A master chart was prepared for detailed information about vitiligo patients. To estimate overall prevalence of vitiligo in new patients attending dermatology OPD 95% confidence interval of prevalence of vitiligo was calculated. Patients were categorised as per their demographic variables, i.e. age, sex, type of vitiligo, presence of associated autoimmune disorders, family history of vitiligo (in first degree relatives) and family history of associated autoimmune disorders. Depending on the nature of associated autoimmune disorder, information about necessary investigations (e.g. skin biopsy, hormonal tests) was also scrutinised to confirm the diagnosis of the associated autoimmune disorder.</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle">Results</span><p id="par0050" class="elsevierStylePara elsevierViewall"><ul class="elsevierStyleList" id="lis0010"><li class="elsevierStyleListItem" id="lsti0020"><span class="elsevierStyleLabel">1.</span><p id="par0055" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleItalic">Demographic characteristics</span>: The total number of vitiligo patients studied was 204. The proportion of vitiligo patients was 0.61% (95% confidence interval was 0.53–0.69%). <span class="elsevierStyleItalic">Age distribution</span>: Age group of 10–20<span class="elsevierStyleHsp" style=""></span>years accounted for maximum number of patients (30.39%). Mean age was 24<span class="elsevierStyleHsp" style=""></span>years. The youngest patient observed having vitiligo was six months old and the oldest patient observed was 79<span class="elsevierStyleHsp" style=""></span>years old. Females (104) constituted 51% and males (100) were 49% (M:F ratio 1.04:1).</p></li><li class="elsevierStyleListItem" id="lsti0025"><span class="elsevierStyleLabel">2.</span><p id="par0060" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleItalic">Family characteristics</span>: Family history of vitiligo in first degree relatives was found in 3.43% of patients. There was no family history of any autoimmune disorders.</p></li><li class="elsevierStyleListItem" id="lsti0030"><span class="elsevierStyleLabel">3.</span><p id="par0065" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleItalic">Clinical features of vitiligo</span>: 66% cases were found to have localised vitiligo (<20% of body surface involvement), 15% had generalised vitiligo. 13% had acral/acromucosal/mucosal vitiligo and the least common type observed was segmental vitiligo (6%).</p></li><li class="elsevierStyleListItem" id="lsti0035"><span class="elsevierStyleLabel">4.</span><p id="par0070" class="elsevierStylePara elsevierViewall">Associated autoimmune disorders were present in 2.94% of the patients (<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>). These were two cases of morphoea (0.98%) (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>), and one case each of Graves’ disease (0.49%) (<a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a>), alopecia areata (0.49%) (<a class="elsevierStyleCrossRef" href="#fig0015">Fig. 3</a>), discoid lupus erythematosus (0.49%) (<a class="elsevierStyleCrossRef" href="#fig0020">Fig. 4</a>), and pemphigus erythematosus (0.49%) (<a class="elsevierStyleCrossRef" href="#fig0025">Fig. 5</a>). Of these, two patients belonged to an older age group (>40<span class="elsevierStyleHsp" style=""></span>years) and four patients belonged to younger age group (<20<span class="elsevierStyleHsp" style=""></span>years). Three patients had localised vitiligo, one patient had generalised vitiligo, one patient had acromucosal vitiligo and one patient had mucosal vitiligo.</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><elsevierMultimedia ident="fig0015"></elsevierMultimedia><elsevierMultimedia ident="fig0020"></elsevierMultimedia><elsevierMultimedia ident="fig0025"></elsevierMultimedia></li></ul></p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle">Discussion</span><p id="par0075" class="elsevierStylePara elsevierViewall">Vitiligo is a multifactorial disorder, autoimmune hypothesis being the most important in the pathogenesis of vitiligo. The autoimmune hypothesis of vitiligo primarily focuses on: (1) association with other autoimmune disorders; (2) association with family history of vitiligo and autoimmune disorders; (3) presence of autoantibodies to melanocytes and autoreactive T cells; (4) presence of genetic factors, i.e. MHC class II alleles, cytotoxic T lymphocyte antigen 4 gene, autoimmune susceptibility foci; and (5) positive response to immunosuppressive therapeutic agents.</p><p id="par0080" class="elsevierStylePara elsevierViewall">Vitiligo is associated with the following autoimmune diseases: (1) autoimmune polyendocrinopathy syndrome type 1 (APS1), type 2 (APS2, Schmidt syndrome), type 3 and type 4. Vitiligo is more frequently a component of APS 3.<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a> (2) Autoimmune thyroiditis, Graves’ disease,<a class="elsevierStyleCrossRefs" href="#bib0050"><span class="elsevierStyleSup">10,11</span></a> (3) Addison's disease,<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">12</span></a> (4) Pernicious anaemia,<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> (5) Myasthenia gravis,<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> (6) Alopecia areata,<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> (7) Pemphigus vulgaris and foliaceus,<a class="elsevierStyleCrossRefs" href="#bib0065"><span class="elsevierStyleSup">13,14</span></a> (8) Morphoea,<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">15</span></a> (9) diabetes mellitus type 1,<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> (10) rheumatoid arthritis,<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> and (11) systemic lupus erythematosus and discoid lupus erythematosus.<a class="elsevierStyleCrossRefs" href="#bib0020"><span class="elsevierStyleSup">4,16</span></a></p><p id="par0085" class="elsevierStylePara elsevierViewall">Alkhateeb et al. reported at least 30% of patients with vitiligo to be affected with at least one additional autoimmune disorder.<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> His study on Caucasian probands and their families reported a significant increase in thyroid disorders, Addison's disease and systemic lupus erythematosus in vitiligo probands as well as their families as compared to the population frequency, while there was no significant increase in alopecia areata, diabetes mellitus, myasthenia gravis and rheumatoid arthritis. The commonest association of vitiligo is with thyroid dysfunction, especially autoimmune thyroiditis. The incidence of thyroid dysfunction reported is varied in different studies: Betterle et al. reported 7.5%; Zettining et al. 21%; Shah et al. 0.27%; Tanioka et al. (7.4% of generalised vitiligo patients).<a class="elsevierStyleCrossRefs" href="#bib0035"><span class="elsevierStyleSup">7,17,18</span></a> Dave et al. reported abnormal thyroid profile in as much as 40% of vitiligo patients and also higher incidence of thyroid dysfunction in mucosal vitiligo.<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">6</span></a> Some studies have reported subclinical thyroid disease and some have reported only the presence of anti-thyroid peroxidase antibodies, thyroid microsomal antibodies and antithyroglobulin antibodies.<a class="elsevierStyleCrossRefs" href="#bib0085"><span class="elsevierStyleSup">17,18</span></a> Increased frequency of autoimmune diseases has also been specifically described in family members of multiplex vitiligo families (families with multiple members having vitiligo), thus reflecting an inherited genetic component of autoimmune susceptibility in these families.<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">19</span></a></p><p id="par0090" class="elsevierStylePara elsevierViewall">Apart from statistically significant association, several immunogenetic factors provide a scientific basis of a true association of vitiligo with other autoimmune disorders: (1) autoimmune susceptibility foci<a class="elsevierStyleCrossRefs" href="#bib0100"><span class="elsevierStyleSup">20,21</span></a>: genome analysis has mapped vitiligo to specific loci, termed as autoimmune susceptibility loci: AIS1 (chromosome 1p31.3–32.2), AIS2 (chromosome 7), AIS3 (chromosome 8), SLEV1 (17p13 – a linkage signal detected in multiplex lupus families that included at least one case of vitiligo). The linkage on chromosome 8 appears to derive from families with isolated vitiligo, while 7 and 17p linkages appear to derive from families with other autoimmune disorders and may represent loci for susceptibility in general. Association analysis across the 17p linkage region has also identified NALP1 as a major susceptibility gene for generalised vitiligo and other autoimmune and autoinflammatory diseases associated with vitiligo.<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">22</span></a> NALP1 recruits the adaptor protein ASC, caspase 1 and caspase 5 to a complex termed the NALP1 inflassome, which activates ILβ. Serum ILβ levels are elevated in patients with generalised vitiligo. NALP1 also plays a role in caspase mediated cellular apoptosis. If a definitive role for NALP1 and ILβ is confirmed, ILβ inhibitors (anakrina) and caspase 1 inhibitors (VX-765) might be effective in the treatment or in the prevention of autoimmune disorders like vitiligo.<a class="elsevierStyleCrossRefs" href="#bib0115"><span class="elsevierStyleSup">23,24</span></a> (2) An increased frequency of heterozygous C4 and C2 deficiency has been reported in patients with vitiligo. C4 and C2 deficiency is known to be associated with several autoimmune disorders.<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">25</span></a> (3) Cytotoxic T lymphocyte antigen 4: Significant association with CTLA 4 polymorphic markers is only seen in patients of vitiligo who have concomitant autoimmune disease.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">26</span></a> (4) Autoimmune regulator: mutations in the autoimmune regulator gene (AIRE) are responsible for autoimmune polyendocrine syndrome type 1(APS1), a disease in which vitiligo is a common clinical manifestation.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a> (5) Lymphoid protein tyrosinase phosphatase: mutations in the gene (PTPN22) encoding lymphoid protein tyrosine phosphatase have an influence on the development of generalised vitiligo and have been associated with susceptibility to autoimmune disorders.<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">27</span></a> All of these provide further evidence for autoimmunity as an aetiological factor in vitiligo.</p><p id="par0095" class="elsevierStylePara elsevierViewall">Our study shows a proportion of 0.61% of vitiligo patients amongst new patients. This is similar to the prevalence of 0.5% reported by Das et al. in Kolkata, India.<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">28</span></a> Shah et al. reported an incidence of 1.84% amongst new patients.<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a> Mean age of the patients was 24<span class="elsevierStyleHsp" style=""></span>years and there was an equal proportion of males and females. Family history was seen in 3.43% of patients, which is less than that reported by Shajil et al. (13.68%) and Gopal et al. (22%).<a class="elsevierStyleCrossRefs" href="#bib0145"><span class="elsevierStyleSup">29,30</span></a></p><p id="par0100" class="elsevierStylePara elsevierViewall">Associated autoimmune diseases in our study constituted 2.94% and were mainly cutaneous associated autoimmune diseases and only one case of Grave's disease. Amongst the cutaneous autoimmune diseases, morphoea constituted 0.98%; alopecia areata 0.49%; pemphigus erythematosus 0.49%; and discoid lupus erythematosus 0.49%. Shah et al. have reported autoimmune diseases in 1.36% of vitiligo patients. Other studies have reported increased frequency of thyroid diseases especially Hashimoto's thyroiditis.<a class="elsevierStyleCrossRefs" href="#bib0020"><span class="elsevierStyleSup">4,7,17</span></a> Grave's disease has been reported in association with vitiligo by Moradi and Ghafarpoor, Dave et al. and Tanioka et al.<a class="elsevierStyleCrossRefs" href="#bib0030"><span class="elsevierStyleSup">6,7,10</span></a> Gopal et al. reported alopecia areata in 7.4% and Shah et al. in 0.55% of vitiligo patients.<a class="elsevierStyleCrossRefs" href="#bib0040"><span class="elsevierStyleSup">8,30</span></a> To the best of our knowledge, our case is the first case of pemphigus erythematosus to be reported in association with vitiligo, although pemphigus foliaceus/vulgaris and lupus erythematosus have been reported with vitiligo.<a class="elsevierStyleCrossRefs" href="#bib0065"><span class="elsevierStyleSup">13,14,16</span></a></p><p id="par0105" class="elsevierStylePara elsevierViewall">The associated autoimmune diseases were more in the younger age group (<20<span class="elsevierStyleHsp" style=""></span>years) – four patients than in older age group – two patients (> 40<span class="elsevierStyleHsp" style=""></span>years). Also, three of these patients had localised vitiligo, one patient had acromucosal vitiligo, one patient had mucosal vitiligo and only one patient showed generalised vitiligo, while other studies have shown increased frequency of autoimmune diseases in generalised vitiligo.<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a></p><p id="par0110" class="elsevierStylePara elsevierViewall">Our study has a relatively small sample size, hence we cannot comment on the statistical significance of the associated autoimmune diseases. Also it is a retrospective study. If it had been a prospective study, we could have also included a few basic investigations for other autoimmune disorders like thyroid disorders even in asymptomatic patients. This probably explains the low proportion of thyroid disorders in our study. Presently, we have started screening all patients of vitiligo in our hospital for thyroid disorders (T3, T4, and TSH). Nevertheless, our study once again emphasizes the autoimmune aetiology of vitiligo and a possible genetic basis of concurrent autoimmune diseases in such patients.</p><p id="par0115" class="elsevierStylePara elsevierViewall">We suggest that:A genomic analysis should be done in patients of vitiligo with other autoimmune diseases, but in a larger sample size in order to identify genes responsible for multiple autoimmune diseases including vitiligo in the Indian population. This has the potential to yield novel insight into the pathogenesis of these diseases and may lead to identification of new targets for therapy and possibly prevention.A detailed clinical examination should be carried out along with a few basic investigations and auto-antibodies especially, antithyroid antibodies in patients with vitiligo for early detection of coexisting auto immune disorders, especially thyroid diseases.</p></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle">Conflicting interest</span><p id="par0125" class="elsevierStylePara elsevierViewall">The authors have no conflict of interest to declare.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:10 [ 0 => array:2 [ "identificador" => "xres86030" "titulo" => array:6 [ 0 => "Summary" 1 => "Background" 2 => "Aim" 3 => "Materials and methods" 4 => "Results" 5 => "Conclusion" ] ] 1 => array:2 [ "identificador" => "xpalclavsec74205" "titulo" => "Keywords" ] 2 => array:2 [ "identificador" => "sec0005" "titulo" => "Introduction" ] 3 => array:2 [ "identificador" => "sec0010" "titulo" => "Aim" ] 4 => array:2 [ "identificador" => "sec0015" "titulo" => "Objectives" ] 5 => array:2 [ "identificador" => "sec0020" "titulo" => "Materials and methods" ] 6 => array:2 [ "identificador" => "sec0025" "titulo" => "Results" ] 7 => array:2 [ "identificador" => "sec0030" "titulo" => "Discussion" ] 8 => array:2 [ "identificador" => "sec0040" "titulo" => "Conflicting interest" ] 9 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2010-10-27" "fechaAceptado" => "2010-12-07" "PalabrasClave" => array:1 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Keywords" "identificador" => "xpalclavsec74205" "palabras" => array:2 [ 0 => "Vitiligo" 1 => "Autoimmune disorders" ] ] ] ] "tieneResumen" => true "resumen" => array:1 [ "en" => array:2 [ "titulo" => "Summary" "resumen" => "<span class="elsevierStyleSectionTitle">Background</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">It is a hospital based study focusing on epidemiological aspects of vitiligo and association with autoimmune disorders. There are few studies elucidating the association of autoimmune disorders with vitiligo in the Indian population. Our study is a small attempt in this direction.</p> <span class="elsevierStyleSectionTitle">Aim</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">To study epidemiological parameters of vitiligo and to study coexistence of autoimmune disorders.</p> <span class="elsevierStyleSectionTitle">Materials and methods</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Records of 33,252 new patients attending the dermatology outpatient department from June 2002 to June 2008 were analysed for the presence of vitiligo and details of important epidemiological variables, and associated autoimmune disorders of these patients were collected and analysed.</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Total number of vitiligo patients was 204. Proportion of vitiligo patients was 0.61%. Male:female proportion was almost equal. Family history of vitiligo was seen in 3.43% of cases.</p><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Associated autoimmune disorders were seen in 2.94% cases and were mainly skin associated autoimmune diseases (morphoea, alopecia areata, discoid lupus erythematosus, and pemphigus erythematosus) except for one case of Grave's disease.</p> <span class="elsevierStyleSectionTitle">Conclusion</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Association of vitiligo with other autoimmune diseases emphasizes autoimmune aetiology of vitiligo. This study also emphasizes the need to actively look for, and if necessary, investigate patients with vitiligo for other autoimmune diseases.</p>" ] ] "multimedia" => array:6 [ 0 => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1295 "Ancho" => 900 "Tamanyo" => 141656 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Vitiligo on the face with morphoea on the volar aspect of right wrist.</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" => 1415 "Ancho" => 900 "Tamanyo" => 254039 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Patient with Grave's disease (showing exophthalmos) with patch of vitiligo on the face.</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" => 988 "Ancho" => 750 "Tamanyo" => 96266 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">Patch of vitiligo with poliosis with alopecia areata (ophiatic pattern also seen).</p>" ] ] 3 => array:7 [ "identificador" => "fig0020" "etiqueta" => "Figure 4" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr4.jpeg" "Alto" => 1354 "Ancho" => 900 "Tamanyo" => 129019 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Discoid lupus erythematosus with vitiligo.</p>" ] ] 4 => array:7 [ "identificador" => "fig0025" "etiqueta" => "Figure 5" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr5.jpeg" "Alto" => 1369 "Ancho" => 900 "Tamanyo" => 262993 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Patient of acromucosal vitiligo with pemphigus erythematosus (close up view of vesicles, erosions on erythematous plaques on chest).</p>" ] ] 5 => array:7 [ "identificador" => "tbl0005" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Serial no. \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Type of associated autoimmune disorder \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Age/sex of the patient \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Type of vitiligo \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Percentage \t\t\t\t\t\t\n \t\t\t\t</td></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Morphoea \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">18/F \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Localised \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="2" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.98</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Morphoea \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3/M \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Mucosal \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">3 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Alopecia areata \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">14/M \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Localised \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.49 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">4 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Discoid lupus erythematosus \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">19/M \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Localised \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.49 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">5 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Pemphigus erythematosus \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">65/M \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Acromucosal vitiligo \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.49 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">6 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Grave's disease \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">58/F \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Generalised \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.49 \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab165296.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Associated autoimmune disorders.</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:30 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Pigmentary disorders" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:3 [ 0 => "S. 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| 2024 October | 244 | 28 | 272 |
| 2024 September | 446 | 31 | 477 |
| 2024 August | 295 | 20 | 315 |
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| 2024 June | 288 | 13 | 301 |
| 2024 May | 317 | 24 | 341 |
| 2024 April | 293 | 17 | 310 |
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| 2024 February | 336 | 36 | 372 |
| 2024 January | 484 | 50 | 534 |
| 2023 December | 515 | 42 | 557 |
| 2023 November | 621 | 39 | 660 |
| 2023 October | 694 | 45 | 739 |
| 2023 September | 353 | 36 | 389 |
| 2023 August | 294 | 19 | 313 |
| 2023 July | 327 | 25 | 352 |
| 2023 June | 337 | 30 | 367 |
| 2023 May | 389 | 40 | 429 |
| 2023 April | 340 | 29 | 369 |
| 2023 March | 300 | 29 | 329 |
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| 2022 December | 142 | 24 | 166 |
| 2022 November | 204 | 28 | 232 |
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| 2021 May | 90 | 27 | 117 |
| 2021 April | 72 | 42 | 114 |
| 2021 March | 17 | 98 | 115 |
| 2021 February | 19 | 74 | 93 |
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| 2020 November | 0 | 57 | 57 |
| 2020 October | 0 | 40 | 40 |
| 2020 September | 0 | 30 | 30 |
| 2020 August | 0 | 21 | 21 |
| 2020 July | 0 | 22 | 22 |
| 2020 June | 0 | 23 | 23 |
| 2020 May | 0 | 38 | 38 |
| 2020 April | 0 | 18 | 18 |
| 2020 March | 0 | 24 | 24 |
| 2020 February | 0 | 18 | 18 |
| 2020 January | 0 | 15 | 15 |
| 2019 December | 0 | 18 | 18 |
| 2019 November | 0 | 3 | 3 |
| 2019 October | 0 | 7 | 7 |
| 2019 September | 0 | 2 | 2 |
| 2019 August | 0 | 7 | 7 |
| 2019 July | 0 | 9 | 9 |
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| 2019 April | 0 | 9 | 9 |
| 2019 March | 0 | 2 | 2 |
| 2019 February | 0 | 4 | 4 |
| 2018 September | 0 | 1 | 1 |
| 2018 August | 0 | 3 | 3 |
| 2018 July | 0 | 3 | 3 |
| 2018 June | 0 | 8 | 8 |
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| 2018 January | 25 | 5 | 30 |
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| 2017 November | 15 | 8 | 23 |
| 2017 October | 17 | 5 | 22 |
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| 2017 August | 32 | 18 | 50 |
| 2017 July | 24 | 14 | 38 |
| 2017 June | 37 | 33 | 70 |
| 2017 May | 38 | 14 | 52 |
| 2017 April | 21 | 11 | 32 |
| 2017 March | 37 | 54 | 91 |
| 2017 February | 44 | 18 | 62 |
| 2017 January | 31 | 17 | 48 |
| 2016 December | 30 | 12 | 42 |
| 2016 November | 48 | 24 | 72 |
| 2016 October | 64 | 23 | 87 |
| 2016 September | 86 | 13 | 99 |
| 2016 August | 36 | 5 | 41 |
| 2016 July | 19 | 5 | 24 |
| 2016 June | 30 | 12 | 42 |
| 2016 May | 19 | 11 | 30 |
| 2016 April | 31 | 28 | 59 |
| 2016 March | 42 | 10 | 52 |
| 2016 February | 33 | 15 | 48 |
| 2016 January | 34 | 14 | 48 |
| 2015 December | 37 | 7 | 44 |
| 2015 November | 27 | 7 | 34 |
| 2015 October | 40 | 4 | 44 |
| 2015 September | 21 | 4 | 25 |
| 2015 August | 63 | 10 | 73 |
| 2015 July | 78 | 3 | 81 |
| 2015 June | 42 | 2 | 44 |
| 2015 May | 31 | 5 | 36 |
| 2015 April | 31 | 9 | 40 |
| 2015 March | 32 | 6 | 38 |
| 2015 February | 14 | 1 | 15 |
| 2015 January | 28 | 2 | 30 |
| 2014 December | 28 | 7 | 35 |
| 2014 November | 16 | 1 | 17 |
| 2014 October | 26 | 6 | 32 |
| 2014 September | 33 | 4 | 37 |
| 2014 August | 21 | 4 | 25 |
| 2014 July | 28 | 4 | 32 |
| 2014 June | 28 | 3 | 31 |
| 2014 May | 26 | 3 | 29 |
| 2014 April | 17 | 1 | 18 |
| 2014 March | 88 | 13 | 101 |
| 2014 February | 94 | 8 | 102 |
| 2014 January | 85 | 5 | 90 |
| 2013 December | 52 | 10 | 62 |
| 2013 November | 69 | 10 | 79 |
| 2013 October | 92 | 7 | 99 |
| 2013 September | 85 | 5 | 90 |
| 2013 August | 70 | 12 | 82 |
| 2013 July | 72 | 9 | 81 |
| 2013 June | 55 | 5 | 60 |
| 2013 May | 57 | 6 | 63 |
| 2013 April | 47 | 9 | 56 |
| 2013 March | 27 | 5 | 32 |
| 2013 February | 12 | 6 | 18 |
| 2013 January | 5 | 3 | 8 |
| 2012 December | 5 | 4 | 9 |
| 2012 November | 0 | 6 | 6 |
| 2012 October | 2 | 2 | 4 |
| 2011 November | 421 | 0 | 421 |
Show all
