RESUMO
BACKGROUND: Despite the availability of a wide range of therapies for the systemic treatment of moderate to severe psoriasis, many psoriasis patients do not receive adequate treatment, suggesting that guidelines may not be correctly applied by physicians. OBJECTIVES: The aim of this study was to analyze data on physicians' implementation of, and reasons for noncompliance with, guidelines for the systemic treatment of moderate to severe psoriasis. METHODS: We conducted a systematic literature review according to the Preferred Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We searched the PubMed and Embase databases for studies on guideline adherence in the systemic treatment of moderate to severe psoriasis. All eligible articles were retrieved in full text and the relevant references of retrieved articles were included. RESULTS: A total of 20 studies were selected. Four studies investigated knowledge of the guidelines, six studies examined their application, and five studies focused on the various barriers to implementation. Finally, five studies discussed ways to improve implementation. Several studies on the quality of psoriasis care have revealed discrepancies between the reality and the optimal care described in national and international guidelines. CONCLUSION: Various barriers to implementation of recommendations exist, such as economic barriers, lack of dermatologic orientation towards, lack of knowledge of recommendations by other specialists, lack of applicability, and country- and practice-specific features (e.g., different benefit/risk ratios, different reimbursement rates and conditions). This review can help the everyday practitioner to better understand these barriers, which will have a direct impact on improving the quality of life of psoriasis patients.