As many as 20 veterans out of 100 from the Iraq and Afghanistan conflicts have PTSD, according to the Department of Veterans Affairs.

Children who experience violence, murder, war and conflict often struggle with high levels of anxiety and stress. Many have post-traumatic nightmares, have trouble sleeping and can’t concentrate in school. The worst thing is that they keep everything to themselves.

I grew up hearing family war stories. Both of my grandfathers served in the World War II era, and they recounted noble efforts by the Greatest Generation. My mom, a nurse in the Army Reserve, deployed in support of the first Gulf War; her stories were of swift victory in one of America’s shortest large-scale military conflicts. This year, as the last of U.S. troops began to withdraw from Afghanistan, I became a mother myself. What will I tell my children about my war, America’s longest?

It can take years for a survivor of a traumatic event to recover from the loss of a loved one, new research shows, but treating the symptoms of post-traumatic stress disorder (PTSD) early may help prevent what's called complicated grief.

Researchers find that people who only suffered mild infections can be plagued with life-altering and sometimes debilitating cognitive deficits.

Many creatures show lasting changes in behavior and physiology after a traumatic experience

A special project is under construction in Broken Arrow called 'The War at Home’ Memorial. City leaders said it will honor veterans whose battles continued through suffering from PTSD. -- For information about treatments for PTSD please visit The Treatment Hub.

In a new public service campaign released Tuesday, Favre lays out the reasons why: It'll reduce the risk of being diagnosed with chronic traumatic encephalopathy, or CTE.

The news coming out of Afghanistan has aroused conflicting emotions for military veterans who served there. For In Depth TODAY, Savannah Guthrie spoke with women from Hidden Heroes, a campaign that provides resources to veteran caregivers, about how events overseas are affecting their lives here at home. “We walk on pins and needles,” one says.

The tragic events unfolding in Afghanistan cut especially deep as we approach the 20th anniversary of 9/11 and remember how long we've been invested in that country. The campaign consumed the professional lives of many veterans, including me. Between June 2006 and August 2009, I deployed to southern Afghanistan twice for a combined 16 months.