ISSN 1516-4446. <a href="http://dx.doi.org/10.1590/S1516-44462009000600005.OBJECTIVE:">http://dx.doi.org/10.1590/S1516-44462009000600005.OBJECTIVE:</a> To review studies that have evaluated the comorbidity between posttraumatic stress disorder and mood disorders, as well as between posttraumatic stress disorder and other anxiety disorders.