4 research outputs found

    Psoriasis sur peau noire : Aspects epidemiologiques et cliniques en dermatologie a Cotonou (Benin)

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    Introduction : L’objectif de notre Ă©tude Ă©tait de dĂ©crire le profil Ă©pidĂ©miologique et clinique du psoriasis sur peau pigmentĂ©e en Dermatologie Ă  Cotonou. MĂ©thodes : Une Ă©tude rĂ©trospective et descriptive a Ă©tĂ© rĂ©alisĂ©e sur 10 ans dans le service de dermatologie du Centre National Hospitalier et Universitaire Hubert Koutoukou Maga de Cotonou. Nous avons inclus tous les patients chez qui le diagnostic de psoriasis Ă©tait retenu sur la base d’arguments cliniques. Les donnĂ©es ont Ă©tĂ© saisies et analysĂ©es avec le logiciel EPI-Info 7. RĂ©sultats : La prĂ©valence du psoriasis Ă©tait de 0,8% (84/10792). La sex-ratio Ă©tait de 1,8. La moyenne d’ñge Ă©tait de 37,9 ans +/- 19,2. La tranche d’ñge la plus reprĂ©sentĂ©e Ă©tait celle des 18-40 ans, soit 46,4%. Les topographies frĂ©quemment retrouvĂ©es Ă©taient : cuir chevelu (39,3%), grands plis (38,1%), coudes (32,1%), genoux (29,8%), jambes (27,4%), thorax et organes gĂ©nitaux externes (25%). Les formes morphologiques Ă©taient dominĂ©es par le psoriasis en plaques (45,2%). Les formes topographiques Ă©taient en majoritĂ© le psoriasis du cuir chevelu (16,7%), le psoriasis inversĂ© (11,9%) et le psoriasis palmo-plantaire (10,7%). Les formes graves Ă  type de psoriasis Ă©rythrodermique et de rhumatisme psoriasique ont Ă©tĂ© retrouvĂ©es dans des proportions respectives de 14,3% et 9,5%. Conclusion : Le psoriasis Ă©tait rare dans le service de dermatologie Ă  Cotonou. Il atteignait en majoritĂ© les adolescents et adultes jeunes de sexe masculin. Le psoriasis en plaques, le psoriasis du cuir chevelu et le psoriasis inversĂ© Ă©taient les formes cliniques les plus frĂ©quentes. Mots clĂ©s : psoriasis, rhumatisme psoriasique, dermatose inflammatoire, peau pigmentĂ©e, BĂ©nin English Abstract: Psoriasis on pigmented skin: Epidemiology and clinical features in dermatology in Cotonou (Benin) Introduction: The aim of our study was to describe the epidemiological and clinical features of psoriasis on pigmented skin in Dermatology in Cotonou. Methods: A retrospective and descriptive study was carried out in the dermatology department of Cotonou National and Teaching Hospital over 10 years. It included all patients for whom the clinical diagnosis of psoriasis was retained. Data were entered and analyzed with EPI-Info 7 software. Results: The prevalence of psoriasis was 0.8% (84/10792). The sex ratio was 1.8. The average age was 37.9 years +/- 19.2. The most represented age group was 18-40 years old, or 46. 4%. The topographies frequently found were: scalp (39.3%), folds (38.1%), elbows (32.1%), knees (29.8%), legs (27.4%), thorax and external genitalia (25%). The morphological forms were dominated by plaque psoriasis (45.2%). The topographic forms were mostly scalp psoriasis (16.7%), flexural psoriasis (11.9%) and palmoplantar psoriasis (10.7%). The severe forms of erythrodermic psoriasis and psoriatic arthritis were found in respective proportions of 14.3% and 9.5%. Conclusion: Psoriasis was rare in the dermatology department in Cotonou. It mainly reached adolescents and young adults of the male sex. Plaque psoriasis, scalp psoriasis and flexural psoriasis were the most common clinical forms. Keywords: psoriasis, psoriatic arthritis, inflammatory dermatosis, pigmented skin, Beni

    The specification of ethnic cleavages and ethnopolitical groups for the analysis of democratic competition in contemporary Africa

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    Ethnicity remains an important (but not the only) cost‐effective strategic resource for organizing collective political action in Africa\u27s emerging democracies. To advance systematic analysis of the impact of ethnicity on current patterns of democratic politics and the potential for democratic consolidation, this article describes and presents a comprehensive data set on ethnopolitical groups in all 48 African countries. It explicates the theoretical orientation that informs the data set and the methodology used in defining, identifying and coding ethnopolitical groups

    The specification of ethnic cleavages and ethnopolitical groups for the analysis of democratic competition in contemporary Africa

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