Post-Traumatic Stress Disorder


A physical, chemical, or emotional factor that causes bodily or mental tension and may be a factor in disease causation.

The National Center for Post-Traumatic Stress Disorder

The National Center for Post-Traumatic Stress Disorder, overseen by the United States Department of Veterans Affairs, houses an online information center with materials on reactions to trauma; symptoms, treatment and care of PTSD; frequently asked questions; and more.

NIMH: Post-Traumatic Stress Disorder

This National Institute of Mental Health page provides information about the symptoms, treatments, and current research and news on Post-Traumatic Stress Disorder, in addition to links to relevant publications and information on how to get help.


Dana Articles

A Smell Test for Parkinson's Disease?

The observation that many people with Parkinson’s have diminished sense of smell has led researchers to develop simple sniff tests to help diagnose the disorder. Others are trying to determine exactly how early this sense is lost, to see if they can build a more-precise test to identify people at risk perhaps a decade before other symptoms appear.


Understanding Stress at a Deeper Level

Researchers look to genes, glia, and neurogenesis to tease out how stress leads to disease and try to find biological clues to who is at greatest risk. Report from the recent SfN meeting.



How Military Service Changes the Brain

At the recent SfN meeting, researchers described new details of the effects of repeated blast injuries and exposure to toxins.


Genes, Environment—and Epigenetics

Can what happened to your parents before you were born affect how your body and mind work at birth—and even now? Researchers in one area of the field of epigenetics—the study of influences on how genes are expressed—think probably so, but their challenge is to prove causality.


Preventing PTSD: A New Use for Ketamine?

The drug has shown promise in treating depression and extinguishing fearful memories. Could it also prevent the descent from fearful memory to full-blown disorder?


Brain Link Established Between Stress and Type 2 Diabetes

Researchers describe sequence from distractibility to anxiety to inflammation to diabetes.


The Darkness Within: Individual Differences in Stress

By: George F. Koob, Ph.D.

(Read Q&A with George F. Koob, Ph.D.)
Factors ranging from age and gender to life experiences and cultural background make us react to situations differently. But biological bases, such as the way genetics and neurochemicals affect our brains, are providing insight into addiction, post traumatic stress disorder, and stressful situations that we face every day.


The Neurobiology of Resilience

Most drug development for depression has focused on undoing the bad effects of stress, but new research suggests that finding ways to induce resilience could lead to new treatments. One of our series of briefing papers.