Free database on Post-Traumatic Stress Syndrome, produced by the VA Medical Center. Coverage includes:

• post-traumatic stress disorder or acute stress disorder (with or without reference to the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders)
• the assessment, description, prevention, or treatment of any psychiatric disorder, especially dissociative identity disorder (formerly called multiple personality disorder), other dissociative disorders, or borderline personality disorder, associated etiologically or epidemiologically with exposure to a traumatic event, or to an event experienced as traumatic by the population under discussion
• the preparation or provision of mental health services to a traumatized population or a population at risk of experiencing traumatic events
• issues of professional ethics, scientific methodology, or public policy relating to traumatized populations.

For more information, see also the National Center for PTSD.