Acupuncture for PTSD

Current treatments for Veterans with PTSD include medications and therapy where the patient talks about traumatic events in order to desensitize to them. While these treatments work for many, a large minority of Veterans do not want medications or exposure therapy. The investigators developed an acupuncture (ACU) treatment for PTSD in order to broaden treatment options. The investigators\' first study showed that it helped most people. However, the investigators need better scientific evidence that it works by comparing ACU to a placebo, such as \"sham\" acupuncture (fewer needles in non-important sites) and determining if ACU alters abnormal physiology in PTSD. In this study 90 Veterans will be randomly assigned (like a coin flip) to receive either ACU or sham. The investigators expect to find that the ACU treated patients have more improvement in PTSD and in physiology (less startle reaction - assessed non-invasively using skin sensors) than the patients in the sham group. This study will provide information to support the use of acupuncture for PTSD at the VA, which will expand treatment options.