OBJECTIVES According to the methodology of the German Institute for Quality and Efficiency in Healthcare (IQWiG), the benefit assessment of a new treatment intervention refers to patient-reported outcomes exclusively. Given the existence of different patient-relevant outcomes the Federal Joint Committee (G-BA) can engage the IQWiG to aggregate these to one comprehensive benefit measurement. So far, the IQWiG uses no standardized method for this. In its current method paper, among the benefit QALY, the IQWiG refers to methods of multi-criteria decision making or preference evaluation like analytic hierarchy process and conjoint analysis. For psoriasis, one of the most frequent chronic skin diseases worldwide, a variety of treatment interventions is available. In the light of recent discussions, the objective was to give an overview of methods which have been used to date to prioritize and weight patient-relevant outcomes in psoriasis treatment. METHODS The present review is based on a systematic literature research until 31 December 2013 in the databases PubMed, Embase, Ovid Medliner, Cochrane Library, EconLit and CINAHL using the keywords “psoriasis” and “preferences”. RESULTS The search resulted in 288 hits without duplicates. 16 articles met the predefined inclusion criteria. In addition to methods to calculate QALY like time-trade off and standard gamble, conjoint analysis, willingness-to-pay and other preference methods were used. In view of the method paper of IQWiG, no study exists in the field of psoriasis where the analytic hierarchy process was used.  CONCLUSIONS The results of the presented review show, that the analytic hierarchy process was not used in psoriasis studies, so far. The use of this method in future studies might provide new essential knowledge in the evaluation of patient preferences in psoriasis treatment.