Introduction : Diabetes mellitus is a chronic disease with significant effects on an individual’s mental, social and personal functioning. The aim of the present study was to compare coping styles and mental health in patients with type II diabetes and non-diabetic individuals.

  Methodology : This causal-comparative study was conducted on all patients with type II diabetes, referring to the Diabetes Clinic of Taleghani Hospital in Kermanshah in 2014. The two groups were selected via available sampling. In total, 55 men and 55 women were enrolled in each group. Coping styles and mental health questionnaires were distributed among the participants. Data were analyzed using one-way analysis of variance (ANOVA) and independent sample t-test.

  Results: There was a significant difference between the two groups in the subscales of coping styles (avoidant, emotional, cognitive, behavioral, and problem-focused styles) and mental health (physical function, agitation, social function and depression) (P<0.01).

  Conclusion: Psychological features are among important factors, which are closely related to physical disorders, and should not be neglected in the treatment process.