posttraumatic stress disorder 309.81 http://id.loc.gov/authorities/subjects/sh85105424 http://purl.bioontology.org/ontology/MESH/D013313 http://purl.obolibrary.org/obo/DOID_2055 http://purl.obolibrary.org/obo/NCIT_C3389 https://en.wikipedia.org/wiki/Category:Posttraumatic_stress_disorder https://en.wikipedia.org/wiki/Posttraumatic_stress_disorder https://www.wikidata.org/wiki/Q202387 An anxiety disorder which results from a traumatic experience that results in psychological trauma. RA1152.P67 F43.1 PTSD RC552.P67 An anxiety disorder precipitated by an experience of intense fear or horror while exposed to a traumatic (especially life-threatening) event. The disorder is characterized by intrusive recurring thoughts or images of the traumatic event; avoidance of anything associated with the event; a state of hyperarousal and diminished emotional responsiveness. These symptoms are present for at least one month and the disorder is usually long-term. post-traumatic stress disorder traumatic stress disorder railway spine shell shock