Variations in psychiatric morbidity between traumatized Norwegian, refugees and other immigrant patients in Oslo.

There is a lack of clinical studies that focus on different psychiatric disorders after trauma and the relationship with migration status. To examine differences in psychiatric morbidity in traumatized patients referred to psychiatric treatment in Southern Oslo. Hundred and ten patients with trauma background attending an outpatient clinic in Southern Oslo were studied. Forty-four of the participants (40%) were ethnic Norwegians, 25 (22.7%) had refugee background and 41 (37.3%) were first- or second-generation immigrants without refugee background. Thorough diagnostic assessment was done by experienced psychiatrists through several structured clinical interviews and self-report questionnaires. Ninety-eight patients (89%) were diagnosed with at least one Diagnostic and Statistical Manual of Mental Disorders, fourth edition, text revision (DSM-IV-TR) disorder. There was a clear difference in the presentation of certain psychiatric disorders between the groups. Ethnic Norwegian patients were more likely to have anxiety disorders: agoraphobia, social phobia and panic disorder than non-refugee immigrant patients. They also had higher rates of alcohol abuse/dependence. Somatoform pain disorder was more common in both the refugee and other-immigrant groups than among the ethnic Norwegian patients. The refugee patients had significantly more major depressive disorder, post-traumatic stress disorder (PTSD) and both co-occurring. Trauma is frequently associated with depression, anxiety disorders, somatoform pain disorder and PTSD in a clinical population. The clinical presentation and comorbidity of these disorders seem to vary significantly between traumatized patients with Norwegian, refugee and non-refugee immigrant backgrounds. After a major trauma, refugees may be at greater risk for both PTSD and depression than other immigrants and the native population.