Asthma symptom burden: relationship to asthma severity and anxiety and depression symptoms

The association of depression and anxiety with medical symptom burden in patients with chronic medical illness

BACKGROUND

Primary care patients with anxiety and depression often describe multiple physical symptoms, but no systematic review has studied the effect of anxiety and depressive comorbidity in patients with chronic medical illnesses.

METHODS

MEDLINE databases were searched from 1966 through 2006 using the combined search terms diabetes, coronary artery disease (CAD), congestive heart failure (CHF), asthma, COPD, osteoarthritis (OA), rheumatoid arthritis (RA), with depression, anxiety and symptoms. Cross-sectional and longitudinal studies with >100 patients were included as were all randomized controlled trials that measure the impact of improving anxiety and depressive symptoms on medical symptom outcomes.

RESULTS

Thirty-one studies involving 16,922 patients met our inclusion criteria. Patients with chronic medical illness and comorbid depression or anxiety compared to those with chronic medical illness alone reported significantly higher numbers of medical symptoms when controlling for severity of medical disorder. Across the four categories of common medical disorders examined (diabetes, pulmonary disease, heart disease, arthritis), somatic symptoms were at least as strongly associated with depression and anxiety as were objective physiologic measures. Two treatment studies also showed that improvement in depression outcome was associated with decreased somatic symptoms without improvement in physiologic measures.

CONCLUSIONS

Accurate diagnosis of comorbid depressive and anxiety disorders in patients with chronic medical illness is essential in understanding the cause and in optimizing the management of somatic symptom burden.

Quality of mental health care for youth with asthma and comorbid anxiety and depression

OBJECTIVES

Youth with asthma have a high rate of anxiety and depressive disorders, and these comorbid disorders are associated with increased asthma symptom burden and functional impairment. This study examined the rates and predictors of recognition of anxiety and depressive disorders among youth (ages 11 to 17) with asthma who are seen in primary care settings as well as the quality of mental health care provided to those with comorbid anxiety and depression over a 12-month period.

METHODS

This study used automated utilization and pharmacy data from a health maintenance organization to describe the rate of recognition of Diagnostic and Statistical Manual of Mental Disorders, edition IV, anxiety and depressive disorders and the quality of mental health care provided for the 17% of youth with asthma and comorbid anxiety and/or depression during the 12-month period prior to diagnosis. Psychiatric diagnoses were based on a telephone version of the Computerized Diagnostic Interview Schedule for Children (Version 4.0).

RESULTS

Approximately 35% of youth with 1 or more anxiety and depressive disorders and 43% of those with major depression were recognized by the medical system during a 12-month period. Greater functional impairment (odds ratio [OR] 3.32, 95% confidence interval [CI] 1.25-8.79), higher severity on parent-rated anxiety and depressive symptoms (OR 2.49, 95% CI 1.04-6.00), and a greater number of primary care visits (OR 1.26, 95% CI 1.10-1.44) were associated with significantly higher recognition rates while having Medicaid or Washington state medical insurance was associated with lower rates of recognition (OR 0.27, 95% CI 0.08-0.92). Only approximately 1 in 5 youths with comorbid major depression received an adequate dosage and duration of antidepressant medication, and only 1 in 6 received a minimally adequate number of psychotherapy sessions (> or =4 visits).

CONCLUSION

Rates of recognition of comorbid anxiety and depressive disorders are low in youth with asthma and few youth with asthma and comorbid anxiety and depression receive guideline-level mental health treatment.