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Mixed anxiety and depression: from theory to practice
J P Boulenger1, M Fournier, D Rosales
1Centre Universitaire de Santé de l'Estrie, Department of Psychiatry, Sherbrooke, Quebec, Canada.
The Journal of Clinical Psychiatry
|January 1, 1997
Summary
Mixed anxiety-depression, defined by the ICD-10, involves patients with both anxiety and depressive symptoms. Research indicates these patients experience functional impairment and may benefit from further study regarding treatment options.
Area of Science:
- Psychiatry
- Clinical Psychology
- Epidemiology
Background:
- The International Classification of Disease, 10th Revision (ICD-10) introduced 'mixed anxiety-depression' for patients with subthreshold anxiety and depressive symptoms.
- These symptoms do not meet full diagnostic criteria for specific anxiety or depressive disorders.
- Such patients represent a significant clinical population often overlooked by traditional diagnostic frameworks.
Observation:
- Epidemiologic studies reveal that patients with mixed anxiety-depression exhibit considerable functional impairment.
- They frequently present with unexplained somatic symptoms and high utilization of nonpsychiatric healthcare services.
- These individuals often experience long-lasting symptoms and are at risk for developing more severe psychiatric conditions.
Findings:
- A Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) field trial found patients with affective symptoms below diagnostic thresholds to be as prevalent as those with diagnosed anxiety or mood disorders.
- These subthreshold symptoms are associated with significant patient distress and functional impairment.
- The study highlights the clinical relevance of these symptom clusters.
Implications:
- While some patients with a history of psychiatric episodes may seek condition-specific treatments, the benefit of standard mild outpatient treatments for those without prior psychiatric history remains unclear.
- Further research is needed to determine optimal pharmacologic and psychological interventions for this population.
- Understanding and addressing mixed anxiety-depression is crucial for improving patient outcomes and healthcare resource allocation.