[Post-traumatic stress disorder (PTSD) and complex PTSD (CPTSD) - a clinical update of knowledge].

Post-traumatic stress disorder, PTSD, is a psychiatric diagnosis that describes a condition where one or more very traumatic events, that include life-threatening or extreme psychological stress, have left permanent traces of distress that induce sustained suffering.  In this clinical overview, we present current updates in diagnostic criteria and a new diagnosis of complex PTSD, and discuss the problems caused by the new PTSD diagnosis criteria partially differing in the DSM-5 and ICD-11 diagnostic manuals. Diagnostic challenges caused by symptom variations is discussed, as well as the high degree of comorbidity with other psychiatric and somatic illnesses. Combined forms of treatment that reduce both psychological PTSD and somatic symptoms is underscored, as well as the clinical value of early discovery of PTSD and treatment of comorbidity. Furthermore, the article illuminates knowledge about resilience and social support as protective factors.