Post-traumatic stress disorder and somatization symptoms: a prospective study

Area of Science:

• Psychiatry
• Mental Health Research
• Epidemiology

Background:

• Post-traumatic stress disorder (PTSD) is a complex mental health condition.
• Somatization symptoms, the expression of psychological distress through physical symptoms, are common.
• The relationship between PTSD history and somatization requires further investigation.

Purpose of the Study:

• To determine if a history of post-traumatic stress disorder (PTSD) increases the risk of somatization symptoms.
• To compare the prevalence of somatization syndrome and symptom counts in relation to PTSD status.

Main Methods:

• Longitudinal study of 1007 young adults (21-30 years old) from a health maintenance organization.
• Initial interviews in 1989, with follow-ups in 1992 and 1994, using the NIMH Diagnostic Interview Schedule.
• Logistic regression analysis to compare somatization prevalence and symptom counts based on baseline PTSD status.

Main Results:

• History of PTSD was associated with a significantly higher number of somatization symptoms across most somatic groups, excluding pain.
• Individuals with PTSD reported more somatization symptoms than those with other psychiatric disorders.
• Baseline PTSD history predicted increased risk for pain (OR=2.1) and conversion symptoms (OR=2.3) during follow-up.

Conclusions:

• A history of PTSD significantly elevates the risk for somatization symptoms, including pain and conversion disorders.
• This increased risk persists even when accounting for comorbid psychiatric conditions.
• The findings suggest PTSD itself, or its associated comorbidity severity, may contribute to somatization.