R. Parisi, D. Symmons, C. Griffiths, and D. M. Ashcroft, Identification and Management of Psoriasis and Associated ComorbidiTy (IMPACT) project team. Global epidemiology of psoriasis: a systematic review of incidence and prevalence, J Invest Dermatol, vol.133, issue.2, pp.377-385, 2013.

N. Silpa-archa, I. Kohli, S. Chaowattanapanit, H. W. Lim, and I. Hamzavi, Post-inflammatory hyperpigmentation: A comprehensive overview: Epidemiology, pathogenesis, clinical presentation, and non-invasive assessment technique, J Am Acad Dermatol, vol.77, issue.4, pp.591-605, 2017.

M. D. Saleem, E. Oussedik, M. Picardo, and J. J. Schoch, Acquired disorders with hypopigmentation: A clinical approach to diagnosis and treatment, J Am Acad Dermatol, vol.80, issue.5, pp.1233-1250, 2019.

C. O. Mendonça, S. Holmes, and A. D. Burden, Absent lentigines in psoriatic plaques, Br J Dermatol, vol.147, issue.5, pp.1044-1045, 2002.

H. François, E. Hallopeau, and . Gasne, Sur un cas de psoriasis avec achromies persistantes et localisations suivant des sphères de distribution nerveuse, Ann Dermatol Syphiligr, vol.29, pp.690-693, 1898.

R. Mahendran and P. G. Norris, Multiple lentigines clearing in resolving psoriatic plaques, Clin Exp Dermatol, vol.24, issue.3, p.237, 1999.

A. F. Alexis and P. Blackcloud, Psoriasis in skin of color: epidemiology, genetics, clinical presentation, and treatment nuances, J Clin Aesthetic Dermatol, vol.7, issue.11, pp.16-24, 2014.

B. P. Kaufman and A. F. Alexis, Psoriasis in Skin of Color: Insights into the Epidemiology, Clinical Presentation, Genetics, Quality-of-Life Impact, and Treatment of Psoriasis in Non-White Racial/Ethnic Groups, Am J Clin Dermatol, vol.19, issue.3, pp.405-423, 2018.

B. L. Poskitt, J. D. Wilkinson, F. T. Wojnarowska, and Y. C. Chia, Patchy speckled bath PUVA pigmentation, J R Soc Med, vol.86, issue.11, pp.665-666, 1993.

N. P. Burrows, S. Handfield-jones, B. E. Monk, R. A. Sabroe, J. M. Geraghty et al., Multiple lentigines confined to psoriatic plaques, Clin Exp Dermatol, vol.19, issue.5, pp.380-382, 1994.

G. Dawn, P. Mchenry, and A. D. Burden, Lentigines in psoriatic plaques: are they unique?, Clin Exp Dermatol, vol.26, issue.5, p.459, 2001.

L. Kanerva, K. M. Niemi, and A. Lassus, Hyperpigmentation and hypopigmentation of the skin after long term PUVA therapy. Light and electron microscopic observations on three patients, J Cutan Pathol, vol.8, issue.3, pp.199-213, 1981.

S. Helland and G. Bang, Nevus spilus-like hyperpigmentation in psoriatic lesions during PUVA therapy, Acta Derm Venereol, vol.60, issue.1, pp.81-83, 1980.

A. Sfecci, A. Khemis, J. Lacour, H. Montaudié, and T. Passeron, Appearance of lentigines in psoriasis patients treated with apremilast, J Am Acad Dermatol, vol.75, issue.6, pp.1251-1252, 2016.

E. B. Lee, K. A. Reynolds, D. J. Pithadia, and J. J. Wu, Appearance of lentigines in psoriasis patient treated with guselkumab, Dermatol Online J, vol.25, issue.1, 2019.

P. S. María, F. Valenzuela, C. Morales, R. D. La-fuente, and R. Cullen, Lentiginous eruption in resolving psoriatic plaques during treatment with ixekizumab: a case report and review of the literature, Dermatol Rep, vol.9, issue.2, p.7079, 2017.

B. Vazquez, V. Gonzalez, I. Molina, E. Montesinos, M. D. Ramon et al., Multiple lentigines arising on resolving psoriatic plaques after treatment with apremilast, Clin Exp Dermatol, vol.44, issue.1, pp.66-67, 2019.

E. Gutiérrez-gonzález, A. Batalla, and D. De-la-mano, Multiple lentigines in areas of resolving psoriatic plaques after ustekinumab therapy, Dermatol Online J, vol.20, issue.4, p.22338, 2014.

N. Martí, I. Molina, V. López, L. Terradez, and E. Jordá, Multiple lentigines confined to a resolving psoriatic plaque, Dermatol Online J, vol.15, issue.10, p.15, 2009.

M. Rogers, Multiple lentigines confined to a resolving psoriatic plaque, treated without phototherapy, Clin Exp Dermatol, vol.20, issue.5, p.446, 1995.

A. J. Mcmichael, V. Vachiramon, D. A. Guzmán-sánchez, and F. Camacho, Psoriasis in African Americans: a caregivers' survey, J Drugs Dermatol JDD, vol.11, issue.4, pp.478-482, 2012.

J. Santos-juanes, P. Coto, S. Mallo, C. Galache, S. Del-río et al., Multiple lentigines confined to resolving psoriatic plaques in a patient treated with adalimumab, Dermatol Basel Switz, vol.216, issue.3, p.279, 2008.

C. L. Larosa, G. T. Foulke, D. F. Feigenbaum, K. M. Cordoro, and A. L. Zaenglein, Lentigines in resolving psoriatic plaques: rarely reported sequelae in pediatric cases, Pediatr Dermatol, vol.32, issue.3, pp.114-117, 2015.

L. A. Costa, I. Belinchón, I. Betlloch, M. Pérez-crespo, and J. Mataix, Multiple lentigines arising in resolving psoriatic plaques after treatment with etanercept, Dermatol Online J, vol.14, issue.1, p.11, 2008.

F. M. Almazán-fernández and P. Fernández-crehuet, Multiple lentigines in psoriasis patients treated with etanercept, Eur J Dermatol EJD, vol.25, issue.4, pp.354-356, 2015.

R. Micieli and A. Alavi, Eruptive lentiginosis in resolving psoriatic plaques, JAAD Case Rep, vol.4, issue.9, pp.924-929, 2018.

F. Bardazzi, M. Magnano, V. A. Antonucci, R. Balestri, P. Sgubbi et al., Lentigines in previous psoriatic plaques in a patient treated with infliximab, Eur J Dermatol EJD, vol.22, issue.5, pp.698-699, 2012.

J. S. Kim, S. K. Lee, and H. R. Ryu, Multiple Lentigines Arising in Sites of Resolving Psoriatic Plaques after Treatment with Ustekinumab, Ann Dermatol, vol.30, issue.3, pp.371-372, 2018.

S. Mccarthy, C. Heffron, and M. Murphy, Multiple lentigines arising on resolving psoriatic plaques after treatment with apremilast, Clin Exp Dermatol, vol.44, issue.3, pp.358-359, 2019.

S. Dogan and N. Atakan, Multiple lentigines confined to psoriatic plaques induced by biologic agents in psoriasis therapy: a case and review of the literature, Cutan Ocul Toxicol, vol.34, issue.3, pp.262-264, 2015.

C. Wang, Y. T. Akalu, and M. Suarez-farinas, IL-17 and TNF synergistically modulate cytokine expression while suppressing melanogenesis: potential relevance to psoriasis, J Invest Dermatol, vol.133, issue.12, pp.2741-2752, 2013.

M. Augustin and . Radtke, Epidemiology and Comorbidity in Children with Psoriasis and Atopic Eczema, Dermatol Basel Switz, vol.231, issue.1, pp.35-40, 2015.

R. Parisi, D. Symmons, C. Griffiths, and D. M. Ashcroft, Identification and Management of Psoriasis and Associated ComorbidiTy (IMPACT) project team. Global epidemiology of psoriasis: a systematic review of incidence and prevalence, J Invest Dermatol, vol.133, issue.2, pp.377-85, 2013.

M. Richard, F. Corgibet, and M. Beylot-barry, Sex-and age-adjusted prevalence estimates of five chronic inflammatory skin diseases in France: results of the « OBJECTIFS PEAU » study, J Eur Acad Dermatol Venereol JEADV, vol.32, issue.11, pp.1967-71, 2018.

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J. H. Saurat, D. Lipsker, L. Thomas, L. Borradori, and J. M. Lachapelle, Dermatologie et Infections Sexuellement Transmissibles

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M. D. Saleem, E. Oussedik, J. J. Schoch, A. C. Berger, and M. Picardo, Acquired disorders with depigmentation: A systematic approach to vitiliginoid conditions, J Am Acad Dermatol, vol.80, issue.5, pp.1215-1231, 2019.

M. D. Saleem, E. Oussedik, M. Picardo, and J. J. Schoch, Acquired disorders with hypopigmentation: A clinical approach to diagnosis and treatment, J Am Acad Dermatol, vol.80, issue.5, pp.1233-1250, 2019.

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N. Silpa-archa, I. Kohli, S. Chaowattanapanit, H. W. Lim, and I. Hamzavi, Postinflammatory hyperpigmentation: A comprehensive overview: Epidemiology, pathogenesis, clinical presentation, and noninvasive assessment technique, J Am Acad Dermatol, vol.77, issue.4, pp.591-605, 2017.

F. H. Hallopeau and E. Gasne, Sur un cas de psoriasis avec achromies persistantes et localisations suivant des sphères de distribution nerveuse, Ann Dermatol Syphiligr, vol.29, pp.690-693, 1898.

R. Mahendran and P. G. Norris, Multiple lentigines clearing in resolving psoriatic plaques

, Clin Exp Dermatol, vol.24, issue.3, p.237, 1999.

C. O. Mendonça, S. Holmes, and A. D. Burden, Absent lentigines in psoriatic plaques, Br J Dermatol, vol.147, issue.5, pp.1044-1049, 2002.

H. Yen and C. Chi, Association Between Psoriasis and Vitiligo: A Systematic Review and Meta-Analysis, Am J Clin Dermatol, vol.20, issue.1, pp.31-40, 2019.

G. Dawn, P. Mchenry, and A. D. Burden, Lentigines in psoriatic plaques: are they unique?, Clin Exp Dermatol, vol.26, issue.5, p.459, 2001.

N. Martí, I. Molina, V. López, L. Terradez, and E. Jordá, Multiple lentigines confined to a resolving psoriatic plaque, Dermatol Online J, vol.15, issue.10, p.15, 2009.

M. Rogers, Multiple lentigines confined to a resolving psoriatic plaque, treated without phototherapy, Clin Exp Dermatol, vol.20, issue.5, p.446, 1995.

F. Bardazzi, M. Magnano, V. A. Antonucci, R. Balestri, P. Sgubbi et al., Lentigines in previous psoriatic plaques in a patient treated with infliximab, Eur J Dermatol EJD, vol.22, issue.5, pp.698-707, 2012.

S. Dogan and N. Atakan, Multiple lentigines confined to psoriatic plaques induced by biologic agents in psoriasis therapy: a case and review of the literature, Cutan Ocul Toxicol, vol.34, issue.3, pp.262-266, 2015.

J. Santos-juanes, P. Coto, S. Mallo, C. Galache, S. Del-río et al., Multiple lentigines confined to resolving psoriatic plaques in a patient treated with adalimumab, Dermatol Basel Switz, vol.216, issue.3, p.279, 2008.

L. A. Costa, I. Belinchón, I. Betlloch, M. Pérez-crespo, and J. Mataix, Multiple lentigines arising in resolving psoriatic plaques after treatment with etanercept, Dermatol Online J, vol.14, issue.1, p.11, 2008.

C. L. Larosa, G. T. Foulke, D. F. Feigenbaum, K. M. Cordoro, and A. L. Zaenglein, Lentigines in resolving psoriatic plaques: rarely reported sequelae in pediatric cases, Pediatr Dermatol, vol.32, issue.3, pp.114-117, 2015.

F. M. Almazán-fernández and P. Fernández-crehuet, Multiple lentigines in psoriasis patients treated with etanercept, Eur J Dermatol EJD, vol.25, issue.4, pp.354-360, 2015.

E. Gutiérrez-gonzález, A. Batalla, and D. De-la-mano, Multiple lentigines in areas of resolving psoriatic plaques after ustekinumab therapy, Dermatol Online J, vol.20, issue.4, p.22338, 2014.

R. Micieli and A. Alavi, Eruptive lentiginosis in resolving psoriatic plaques. JAAD Case Rep, vol.4, pp.924-933, 2018.

B. Vazquez, V. Gonzalez, I. Molina, E. Montesinos, M. D. Ramon et al.,

, Multiple lentigines arising on resolving psoriatic plaques after treatment with apremilast, Clin Exp Dermatol, vol.44, issue.1, pp.66-73, 2019.

A. Sfecci, A. Khemis, J. Lacour, H. Montaudié, and T. Passeron, Appearance of lentigines in psoriasis patients treated with apremilast, J Am Acad Dermatol, vol.75, issue.6, pp.1251-1253, 2016.

P. S. María, F. Valenzuela, C. Morales, R. D. La-fuente, and R. Cullen, Lentiginous eruption in resolving psoriasis plaques during treatment with ixekizumab: a case report and review of the literature. Dermatol Rep, vol.9, p.7079, 2017.

E. B. Lee, K. A. Reynolds, D. J. Pithadia, and J. J. Wu, Appearance of lentigines in psoriasis patient treated with guselkumab, Dermatol Online J, vol.25, issue.1, 2019.

S. Helland and G. Bang, Nevus spilus-like hyperpigmentation in psoriatic lesions during PUVA therapy, Acta Derm Venereol, vol.60, issue.1, pp.81-84, 1980.

L. Kanerva, K. M. Niemi, and A. Lassus, Hyperpigmentation and hypopigmentation of the skin after long term PUVA therapy. Light and electron microscopic observations on three patients, J Cutan Pathol, vol.8, issue.3, pp.199-213, 1981.

B. L. Poskitt, J. D. Wilkinson, F. T. Wojnarowska, and Y. C. Chia, Patchy speckled bath PUVA pigmentation, J R Soc Med, vol.86, issue.11, pp.665-671, 1993.

N. P. Burrows, S. Handfield-jones, B. E. Monk, R. A. Sabroe, J. M. Geraghty et al.,

, Multiple lentigines confined to psoriatic plaques, Clin Exp Dermatol, vol.19, issue.5, pp.380-382, 1994.

A. Mitra, R. Yeung, R. Sheehan-dare, and C. L. Wilson, Lentiginous hyperpigmentation confined to resolved psoriatic plaques and treated with a Q-switched ruby laser, Clin Exp Dermatol, vol.31, issue.2, pp.298-307, 2006.

J. S. Kim, S. K. Lee, and H. R. Ryu, Multiple Lentigines Arising in Sites of Resolving Psoriatic Plaques after Treatment with Ustekinumab, Ann Dermatol, vol.30, issue.3, pp.371-373, 2018.

A. Arakawa, K. Siewert, and J. Stöhr, Melanocyte antigen triggers autoimmunity in human psoriasis, J Exp Med, vol.212, issue.13, pp.2203-2215, 2015.

C. Wang, Y. T. Akalu, and M. Suarez-farinas, IL-17 and TNF synergistically modulate cytokine expression while suppressing melanogenesis: potential relevance to psoriasis, J Invest Dermatol, vol.133, issue.12, pp.2741-52, 2013.

B. P. Kaufman and A. F. Alexis, Psoriasis in Skin of Color: Insights into the Epidemiology, Clinical Presentation, Genetics, Quality-of-Life Impact, and Treatment of Psoriasis in Non-White Racial/Ethnic Groups, Am J Clin Dermatol, vol.19, issue.3, pp.405-428, 2018.

A. J. Mcmichael, V. Vachiramon, D. A. Guzmán-sánchez, and F. Camacho, Psoriasis in African-Americans: a caregivers' survey, J Drugs Dermatol JDD, vol.11, issue.4, pp.478-82, 2012.

S. Mccarthy, C. Heffron, and M. Murphy, Lentigines within fixed drug eruption: reply to « Multiple lentigines arising on resolving psoriatic plaques after treatment with apremilast, Clin Exp Dermatol, vol.44, issue.3, pp.358-367, 2019.

A. Arsouze, C. Fitoussi, and P. Cabotin,

, Ann Dermatol Venereol, vol.135, issue.3, pp.177-82, 2008.

S. K. Shah, A. Arthur, Y. Yang, S. Stevens, and A. F. Alexis, A retrospective study to investigate racial and ethnic variations in the treatment of psoriasis with etanercept, J Drugs Dermatol JDD, vol.10, issue.8, pp.866-72, 2011.

G. S. Kerr, S. Qaiyumi, and J. Richards, Psoriasis and psoriatic arthritis in African-American patients--the need to measure disease burden, Clin Rheumatol, vol.34, issue.10, pp.1753-1762, 2015.

, Serment d'Hippocrate

, Au moment d'être admise à exercer la médecine, je promets et je jure d'être fidèle aux lois de l'honneur et de la probité

, Mon premier souci sera de rétablir, de préserver ou de promouvoir la santé dans tous ses éléments, physiques et mentaux, individuels et sociaux

, Je respecterai toutes les personnes, leur autonomie et leur volonté, sans aucune discrimination selon leur état ou leurs convictions. J'interviendrai pour les protéger si elles sont affaiblies, vulnérables ou menacées dans leur intégrité ou leur dignité. Même sous la contrainte

, Je ne tromperai jamais leur confiance et n'exploiterai pas le pouvoir hérité des circonstances pour forcer les consciences

, Je ne me laisserai pas influencer par la soif du gain ou la recherche de la gloire

, Reçu(e) à l'intérieur des maisons, je respecterai les secrets des foyers et ma conduite ne servira pas à corrompre les moeurs

, Je ne prolongerai pas abusivement les agonies. Je ne provoquerai jamais la mort délibérément

, Je n'entreprendrai rien qui dépasse mes compétences. Je les entretiendrai et les perfectionnerai pour assurer au mieux les services qui me seront demandés

, J'apporterai mon aide à mes confrères ainsi qu'à leurs familles dans l'adversité

, Que les hommes et mes confrères m'accordent leur estime si je suis fidèle à mes promesses

, que je sois déshonorée et méprisée si j'y manque