Revising psychiatric diagnostic categorisation of immigrant patients after using the Cultural Formulation in DSM-IV.

This study evaluated the use of the Outline for Cultural Formulation (OCF) from the DSM-IV in the diagnosis of immigrants and refugee patients at an outpatient psychiatric clinic in Sweden. Using the OCF in conjunction with standard diagnostic procedures led to major revisions of diagnoses for 56.5% of patients. Anxiety disorders, especially PTSD, constitute the disorder group in which the most changes were made. In order to understand how information from the OCF interview led clinicians to revise diagnoses, data from clinical discussions were analysed through qualitative content analysis. This revealed four major themes related to the reevaluation, and at times confirmation, of given clinical psychiatric diagnoses: new information; expression of distress in emotional language; expression of distress in relation to life experiences; and improved understanding of the patient's suffering. The findings suggest that the OCF may be useful for: (a) formulating culture in relation to illness experiences, (b) contextualising diagnostic categorisation, and (c) improving overall understanding of the patient that may facilitate individualised planning of treatment and therapy.