Participants in this open label study will be randomly assigned to receive either the standard care provided to injured trauma survivors or a combination of behavioral therapy and drug therapy. Participants assigned to receive the combination therapy may receive one or more of the following medications based on their individual needs: fluoxetine; sertraline; paroxetine; buspirone; propranolol; trazodone; and any of the benzodiazepines. Participants may begin receiving medication immediately or anytime within the 12 months post-injury. Behavioral therapy will also be administered on the basis of the participants' individual needs and may continue for up to 12 months. Participants will also take part in motivational interviews, the first of which will be conducted upon study entry in the hospital ward. Subsequent interviews will be conducted over the phone at Months 1, 3, 6, 9, and 12. Participants will be required to report to the study site only for the initial baseline visit. Outcome measures will include PTSD severity ratings, frequency of substance use, and general functioning reports.