Global Healthcare Study on Psoriasis (GHSP): cohort profile and first findings
Issued Date
2026-05-01
Resource Type
eISSN
20446055
Scopus ID
2-s2.0-105039464002
Journal Title
BMJ Open
Volume
16
Issue
5
Rights Holder(s)
SCOPUS
Bibliographic Citation
BMJ Open Vol.16 No.5 (2026)
Suggested Citation
Maul J.T., Fröhlich F., Nielsen M.L., Maul L.V., Torres T., Thyssen J., Armstrong A., Oon H.H., Ji M., Kang X., Valenzuela F., Romiti R., Carvalho A.V.E.d., Novoa F., Sousa M., Luz M., Guevara B.E.K., doss N., Gisondi P., Chularojanamontri L., Kündig T.M., Egeberg A., Thomsen S.F., Didaskalu J.A. Global Healthcare Study on Psoriasis (GHSP): cohort profile and first findings. BMJ Open Vol.16 No.5 (2026). doi:10.1136/bmjopen-2025-112891 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/116949
Title
Global Healthcare Study on Psoriasis (GHSP): cohort profile and first findings
Author's Affiliation
Universidade de São Paulo
University of California, Los Angeles
Universität Zürich
Universidade do Porto
Universidad de Chile
NUS Yong Loo Lin School of Medicine
Det Sundhedsvidenskabelige Fakultet
Siriraj Hospital
Bispebjerg Hospital
Università di Verona Scuola di Medicina e Chirurgia
Centro Hospitalar Universitário de Santo António
Universität Zürich, Medizinische Fakultät
Hospital Moinhos de Vento
People's Hospital of Xinjiang Uygur Autonomous Region
Southern Philippines Medical Center
Fengxian Institute of Dermatosis Prevention
Probity Medical Research
Golden Towers Médical Centre
Brokenshire College
Jockey Salud Medical Center
University of California, Los Angeles
Universität Zürich
Universidade do Porto
Universidad de Chile
NUS Yong Loo Lin School of Medicine
Det Sundhedsvidenskabelige Fakultet
Siriraj Hospital
Bispebjerg Hospital
Università di Verona Scuola di Medicina e Chirurgia
Centro Hospitalar Universitário de Santo António
Universität Zürich, Medizinische Fakultät
Hospital Moinhos de Vento
People's Hospital of Xinjiang Uygur Autonomous Region
Southern Philippines Medical Center
Fengxian Institute of Dermatosis Prevention
Probity Medical Research
Golden Towers Médical Centre
Brokenshire College
Jockey Salud Medical Center
Corresponding Author(s)
Other Contributor(s)
Abstract
Purpose: Despite the intention of international psoriasis treatment guidelines to cover all patients globally, disparities persist in the availability and accessibility of adequate therapy in many countries. The Global Healthcare Study on Psoriasis (GHSP) aims to study patient characteristics, disease impact, treatment accessibility and healthcare systems worldwide. This study provides a description and data analysis of 22 countries. Participants: The GHSP cohort was initiated in 2020, and the number of recruiting centres has gradually grown. Participants are recruited by dermatologists at reference centres worldwide. Data are collected using a standardised assessment questionnaire comprising 88 items, administered by trained experts. Findings to date: By 26 October 2024, cross-sectional data had been collected from 3950 psoriasis patients at 130 reference centres in 22 countries on six continents. The majority (55.7%) of patients were male, and the median (IQR) body mass index was 26.5 (23.7–30.1) kg/m<sup>2</sup>. The median (IQR) Psoriasis Area and Severity Index was 5.0 (2.0–11.4), and median (IQR) Dermatology Life Quality Index was 7.0 (2.0–14.0). Psoriatic arthritis was present in 20.2% of the patients and nail psoriasis in 36.7%. Additionally, 16.5% of patients were current smokers, and 26.4% reported regular alcohol consumption. Future plans: By identifying inequalities, special patient populations and country-specific differences, the GHSP will guide the development of strategies to enhance psoriasis care on a global level. Future directions include expanding the study to additional countries and sites worldwide, while transitioning into a long-term global registry of skin diseases, including atopic dermatitis and hidradenitis suppurativa, termed ‘Global Healthcare Registry on Skin Diseases’.