Psychotherapy is the keystone of PTSD treatment.  Nevertheless, medications play an important role and often included to facilitate the psychotherapeutic treatments.  Medication can help improve core symptoms as well as other problems related to the traumatic experience, such as depression, anxiety, or excessive alcohol or drug use.

For people who have experienced trauma, there may be changes in the brain that are linked to their ability to manage stress.  Specifically, people with PTSD have changes in the balance of certain chemicals - called neurotransmitters -  in the brain than those who do not have PTSD.  These imbalances in different neurotransmitter systems are the focus of medication treatment. 

There of different classes of medications that are used to address different types of symptoms.