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Introduction: Post-traumatic stress disorder (PTSD) is a syndrome that occurs after hearing or observing a severe stressful and damaging factor and can lead to death, although it can be improved with treatment. This study aims to investigate the effect of cognitive behavioral therapy (CBT) on post-traumatic stress disorder among the earthquake-affected people of Sarpol Zahab city, Kermanshah province in 2017.
Method: This research is a single-case design with multiple baselines that was used to analyze the data obtained from graphical analysis. After confirmation by psychiatrists and with clinical interviews, one person among the clients to the relief camp of local psychologists was selected based on available samples randomly.
Findings: The findings indicated that cognitive behavioral therapy had a positive effect on reduction of post-traumatic stress disorder and patient's recovery was 81.7% which has somewhat prolonged during follow-up.
Conclusion: According to the results, cognitive behavioral therapy is effective in reducing and improving the symptoms of post-traumatic anxiety disorder.