Introduction he diagnostic and statistical manual of mental disorders (fifth edition) defines social anxiety disorder as marked or severe anxiety or fear of social situations in which individuals are being watched or monitored by others. When faced with social situations, these individuals are terrified to be negatively evaluated by others as well as be judged as anxious, weak, ignorant, tedious, and non-friendly people (1). Social anxiety disorder is one of the most common psychological diseases and the third most common psychiatric disorder in the general population (2). Social anxiety has severe negative effects on mental, physical and social health, as well as the quality of life and performance of the patients. This disorder leads to considerable disabilities, thereby reducing levels of meaningfulness and purposefulness in daily life (3).