USA Today is featuring a story painting a picture of the unique issues that women combat veterans face:

More than 182,000 women have served in Iraq, Afghanistan and the surrounding region —about 11% of U.S. troops deployed, the Pentagon says.

That dwarfs the 7,500 who served mostly as nurses in Vietnam and the nearly 41,000 women deployed during the brief Gulf War.
...
Women are barred from ground jobs in infantry, armor and artillery units and are technically confined to support roles. But those jobs include some of the most dangerous: driving supply convoys, guarding checkpoints and searching women as part of neighborhood patrols.

Iraq is "an equal opportunity war" in which attacks come not only from enemy fighters, but also from roadside bombs and mortars, says Patricia Resick, director of the Women's Health Sciences Division of the VA's National Center for PTSD in Boston.
...
For some, combat trauma is complicated and intensified by rape or other sexual abuse, often by comrades they've trained and fought beside. The VA says 20% of women seeking its care since 2002 showed symptoms of military sexual trauma, compared with 1.1% of male veterans.

Comments: It has been scientifically validated that women suffer from more depression than men. Women face unique forms of the disease such as post-partum depression. They may also respond to different treatments than their male counterparts. We need to understand PTSD more clearly. Does it impact women differently then men? Do women respond to treatments differently?

Reference: http://www.usatoday.com/news/nation/2008-01-01-womenvets_N.htm