Cancer pain is one of the most frequent and debilitating consequences of cancer and reduces the ability to regulate various emotions such as anger from the psychological effects of this disease, which affects the quality of life of these patients. The purpose of this research was to determine the effect of awareness and emotional expression interventions on the anger and pain intensity of women with breast cancer. The current research was semi-experimental with a pre-test-post-test design with a control group and a two-month follow-up. In this study, 50 qualified people were selected by available sampling and randomly replaced into two groups awareness and emotional expression therapy (25 people) and control group (25 people). For the experimental group, awareness and emotional expression therapy was performed during 8 sessions of 90 minutes. Research data were collected through Siegel's Multidimensional Anger Scale questionnaire and Visual Pain Scale questionnaire. Data were analyzed in SPSS software version 23 and by repeated measure analysis of covariance. The results showed that awareness and emotional expression therapy has a significant effect on the overall score of pain and anger intensity in breast cancer patients and this effect continued until the follow-up stage (P < 0.05). In breast cancer patients, due to the lack of knowledge about the nature of the disease and the determining role of psychological factors in the rate of recovery and the treatment process, it is necessary to provide conditions for their feelings and emotions to be well-regulated and expressed.
