Background & objectives: Diabetes mellitus is a common metabolic disorder that has negative effect on physical function, psychological condition, interpersonal, family and social relationship and in general, on psychological well being. The aim of this study was to investigate of psychological profile in diabetic patients and it's relatioship with social support.

  Methods: In this descriptive-correlational study, 120 diabetic patients have been selected among of those that systematically refered to Diabetes Clinic of Emam Khomeini Hospital in order to follow their therapeutic process in Ardabil . Data gathering was accomplished by two tests: SCL-90-R and Social Support Scale. Finally data were analyzed by Pearson correlation coefficient and T-test on SPSS-17 software and p-value less than 0.05 considered as significant.

  Results: Results showed that 70% of diabetic patients had problems in somatic complaint and obsession, 62.5% in sensitivity, 72.5% in depression, 62.5% in anxiety, 55% in hostility, 67.5% in paranoid thoughts, 27.5% in phobia and 37.5% in psychosis. Correlations between social support with somatic complaint, obsession, sensitivity, depression, anxiety, hostility and paranoid thoughts were negatively significant. Family support associated significantly with all of the psychological variables but friend Support had no significant correlation with them.

  Conclusion: The range of psychological problems experienced by diabetic patients is more extensive and these problems have significant relationship with social support. Thus, attention to different dimensions of psychological health is necessary and social support-based interventions can be more effective.