The relationship between personality traits and psychosomatic complaints in a sample of Iranian adults

It has been suggested that personality traits may be related to the psychological conditions of people. The current study aimed to explore the relationship between personality traits and psychosomatic complaints.

This study was carried out on a sample of Iranian adults living in Isfahan province. The NEO Five- Factor Inventory questionnaire was used to assess personality traits. A 30-item comprehensive questionnaire was used to assess somatoform symptoms and factor analysis was performed to construct psychosomatic complaints profiles. Data was analyzed by Multiple Indicators Multiple Causes (MIMIC) model, using R software.

In total, 4763 participants were recruited 44.2% males and 55.8% females, with a mean age of 36.54 ± 8.04 years. The results of the MIMIC model showed that there is a significant association between the dimensions of personality (neuroticism, extroversion, openness, agreeableness and conscientiousness) and dimensions of psychosomatic complaints profiles (gastrointestinal, neuro-skeletal, pharyngeal-respiratory and psychological) (P < 0.05). In addition, we found that characteristics such as age, sex, marital status, education, physical activity, and body mass index are related to psychosomatic complaints (P < 0.05) and can affect the association between personality traits and psychosomatic complaints.

Given the relationship between personality traits and psychosomatic complaints, it is possible to provide preventive and therapeutic interventions for psychosomatic complaints based on personality traits specific to each individual.