(Reuters Health) - Men and women with post-traumatic stress disorder (PTSD) may also experience sexual dysfunction and relationship difficulties, a new research review suggests. "Persons with PTSD often complain of sexual dysfunction and problems with intimacy more generally," and there's increasing evidence to support this association, said lead study author Rachel Yehuda in an email. About 6 percent of men and 13 percent of women will experience PTSD at some point in their life, Yehuda and colleagues note in the Journal of Sexual Medicine. Triggers for the condition include exposure to actual or threatened death, serious injury or sexual violence, as well as witnessing a loved one endure this kind of trauma. Symptoms can include recurrent flashbacks and nightmares; instinctive avoidance of situations that might trigger a remin der of the trauma; emotions of guilt, shame, anger or feelings of alienation and disinterest in previously enjoyable activities; as well as cha