Related Experiment Videos
Risk and resilience in posttraumatic stress disorder
1Bronx VA Medical Center, Mt. Sinai School of Medicine, Bronx, NY, USA. rachel.yehuda@med.va.gov
The Journal of Clinical Psychiatry
|January 20, 2004
Summary
Posttraumatic stress disorder (PTSD) affects about 9% of US adults. Research suggests trauma exposure, prior trauma, and lower cortisol levels may increase PTSD risk.
Area of Science:
- Psychiatry
- Neuroscience
- Epidemiology
Background:
- Posttraumatic stress disorder (PTSD) is a common psychiatric condition with a 9% lifetime prevalence in the US.
- Increased global trauma exposure may elevate PTSD incidence.
- PTSD develops after experiencing or witnessing life-threatening events, leading to intrusive memories, avoidance, and hyperarousal.
Purpose of the Study:
- Investigate factors contributing to PTSD development after trauma exposure.
- Explore individual differences in resilience to trauma.
- Examine the role of neuroendocrine changes, like cortisol levels, in PTSD pathology.
Main Methods:
- Review of epidemiological data on PTSD prevalence.
- Analysis of studies on risk factors for PTSD.
- Examination of neuroendocrine correlates of trauma exposure.
Main Results:
- Only a subset of trauma-exposed individuals develop PTSD, indicating varying resilience.
- Previous trauma exposure and acute trauma response intensity are potential risk factors.
- Lower cortisol levels may be associated with PTSD and influence memory processing.
Conclusions:
- Understanding PTSD risk factors is crucial for identifying vulnerable individuals.
- Neuroendocrine factors, particularly cortisol, may play a significant role in PTSD development.
- Further research into the neurobiology of trauma response is warranted.