Society of Diabetic Nephropathy Prevention Journal of Preventive Epidemiology 2476-3934 3 2 2018 07 01 Association of premenstrual syndrome with temperaments and ethnicities; an evidence-based traditional medicine study in west of Iran e19 e19 EN Razieh Shirzadegan https://orcid.org/0000-0002-5910-6809 Seyed Amir Yasin Ahmadi Fatemeh Yari Parastoo Baharvand Afshin Hasanvand https://orcid.org/0000-0002-9297-7251 Journal Article 2018 08 20 2018 11 10 Introduction: Iranian traditional medicine is based on the quadruplet temperaments. Objectives: In the present study we aimed to evaluate the association of premenstrual syndrome (PMS) and temperaments and ethnicities of female medical students of the west of Iran. Patients and Methods: To conduct this study, we selected 100 female college students of Lorestan University of Medical Sciences. To diagnose their temperaments (natures), we used a 10-item questionnaire. For the ethnicities, we applied the neighbor-joining tree of western Iran ethnicities previously reported based on human leukocyte antigen (HLA) genes. A researcherdesigned questionnaire was used for the detection of PMS. Results: Among 100 enrolled students, 45 students were healthy, and 55 students had different stages of PMS. Female students with typical warm nature were more susceptible to PMS (P=0.036). The role of ethnicity was not statistically significant. Conclusion: In medical plant related studies, patients should be categorized based on their temperaments. Iranian traditional medicine should be reinvestigated based on evidence-based medicine.