Assessment Instruments for a Health-Related Quality of Life in DiabetesMellitus. the assessment of Health-related quality of Life (HrqoL) has been increasingly used to measure the overall impact of diseases in people's life. diabetes mellitus (dM) is a chronic disease associated with high morbidity, mortality, and HrqoL impairment in patients. In longitudinal studies, the psychosocial impact of dM predicts mortality. the objective of this review is to describe and to analyze the main instruments used for the HrqoL evaluation in patients with dM. generic instruments such, as the quality of Well-Being Scale (qWB), Medical Outcomes Study 36-item Short-Form Health Survey (SF-36), Euroqol (Eq-5d) and specific instruments as the diabetes care Profile (dcP), diabetes quality of Life Measure (dqOL), diabetes Impact Measurement Scales (dIMS), Appraisal of diabetes Scale (AdS), Audit of diabetes-dependent quality of Life (AddqoL), diabetes Health Profile (dHP-1 and dHP-18), questionnaire on Stress in Patients with diabetes-revised (qSd-r), WellBeing Enquiry goes diabetics (WEd), diabetes-Specific quality-of-life Scale