Clinical Practice Guidelines for treatment of PTSD and Acute Stress Disorder have been developed in a number of countries, including Australia, the United Kingdom, and the United States.
A recent review in the Journal of Traumatic Stress provides an excellent overview:
Forbes, D., Creamer, M., Bisson, J., Cohen, J,, Crow, B., Foa, E., Friedman, M., Keane, T., Kudler, H., Ursano, R. (2010) A guide to guidelines for the treatment of PTSD and related conditions , Journal of Traumatic Stress.
Abstract: In recent years, several practice guidelines have appeared to inform clinical work in the assessment and treatment of posttraumatic stress disorder. Although there is a high level of consensus across these documents, there are also areas of apparent difference that may lead to confusion among those to whom the guidelines are targeted--providers, consumers, and purchasers of mental health services for people affected by trauma. The authors have been responsible for developing guidelines across three continents (North America, Europe, and Australia). The aim of this article is to examine the various guidelines and to compare and contrast their methodologies and recommendations to aid clinicians in making decisions about their use.