Psychiatric Diagnostic Criteria Fail to Identify Psychological Suffering in Oncology

Main Category: Psychology / Psychiatry
Article Date: 18 Mar 2005 - 14:00 PDT

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A group of researchers of the University of Ferrara studied the psychological and psychosomatic distress associated with cancer in the march issue of Psychotherapy and Psychosomatics.

Psycho-oncology literature has shown that 30-50% of cancer patients meet the criteria for a psychiatric diagnosis, according to the usual nosographic classification (e.g. DSM). The Diagnostic Criteria for Psychosomatic Research (DCPR) have been shown to be useful in identifying psychological constellations in patients with medical illness.

The aims of the study were to compare the DSM-IV and the DCPR in their application to cancer patients. One hundred and forty-six patients with cancer underwent semistructured interviews to assess psychiatric morbidity and psychosocial syndromes according to the DSM-IV and the DCPR, respectively. The Brief Symptom Inventory (BSI) was also used to assess psychological stress symptoms. Sixty-five subjects (44.5%) met the criteria for a DSM-IV diagnosis (DSM cases), while 104 patients (71.2%) presented symptoms meeting the criteria for at least one DCPR syndrome. Three DCPR dimensions were more frequent than others, specifically Health Anxiety (37.7%), Demoralization (28.8%) and Alexithymia (26%). Among the subjects with no formal DSM-IV diagnosis (n = 81), 58% had at least one DCPR syndrome. DSM-IV cases had higher scores on several BSI subscales in comparison with patients with only one DCPR syndrome, while no difference was found in patients with more than one DCPR diagnosis.

The DCPR system was found to be useful in oncology in investigating psychological conditions which are not identified by the DSM-IV alone. Assessment of more specific constructs, other than intensity of general stress symptoms, may give more specific information and help in tailoring psychological intervention for patients with cancer.

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