engMarron, S.E.Palma-Ruiz, A.M.Cerro-Muñoz, P.A.Morales-Callaghan, A.M.Simal-Gil, E.Gilaberte-Calzada, Y.Garcia Latasa de Aranibar, F.J.Alcalde-Herrero, V.M.Fuentelsaz del Barrio, M.V.Gracia-Cazana, T.Tomas-Aragones, L.Quality of life in hidradenitis suppurativa: psychometric properties of HSQOL-24ART-2019-122184P14 Introduction: Hidradenitis Suppurativa (HS) has been associated with impaired quality of life (QoL). There are various measuring systems to assess physical severity; however, there are no specific QoL questionnaires for this disease in the Spanish language. Objective: To develop and validate a disease-specific instrument to measure QoL in patients with HS. Methods: A literature search was carried out to prepare a semi structured interview for patients with HS, as well as a Delphi expert consensus among health professionals. The validation with a sample of 130 patients is presented. The preliminary validation of the HSQoL-24 was passed twice to a group of 30 patients with 30 ± 10 days of interval. The DLQI and the Skindex-29 were used for its validation. Results: Cronbach alpha 0.87 indicates a good internal consistency of the questionnaire. The intraclass correlation coefficient (ICC) with the DLQI was 0.70 (p-value) (< 0.001), and 0.87 (p-value) (< 0.001) with the Skindex-29. Conclusions: The HSQoL-24 is the first specific self-administered questionnaire to assess QoL in patients with HS in Spanish. It is user friendly and easy to. This study demonstrates the excellent properties of the instrument: comprehensibility, reliability (test-retest), internal consistency, validity, comparison with DLQI and SKINDEX-29, and discriminative capacity.2019http://zaguan.unizar.es/record/98422http://zaguan.unizar.es/record/98422oai:zaguan.unizar.es:98422ACTA DERMATO-VENEREOLOGICA 99, 8 (2019), 751by-nchttp://creativecommons.org/licenses/by-nc/3.0/es/info:eu-repo/semantics/openAccess