Psychiatric diagnosis in primary care patients with increased depressive symptoms.

BACKGROUND: Screening of depression has been recommended in primary care and Beck's 21-item Depression Inventory (BDI-21) is a commonly used tool for screening. Depression has been shown to be frequently accompanied by comorbidities. AIMS: This study aimed to analyze the characteristics, psychiatric diagnoses, and psychiatric comorbidity of primary care patients who have been screened for depression and referred to a depression nurse. METHODS: The study subjects were primary care patients aged ≥ 35 years with depressive symptoms (BDI-21 > 9). Their psychiatric diagnosis were based on a diagnostic interview (Mini-International Neuropsychiatric Interview; M.I.N.I.) conducted by a trained study nurse. RESULTS: Of the 705 study subjects, 617 (87.5%) had at least one and 66.1% had at least two psychiatric diagnoses. The most common diagnosis was depression (63.4%). The next most common diagnoses were generalized anxiety disorder (GAD) (48.1%) and panic disorder (22.8%). Only 8.8% of the study subjects had depression without other psychiatric disorders. Ten percent of the subjects had both depression and a generalized anxiety disorder (GAD). Also other psychiatric comorbidities were common. Age was inversely associated with the psychiatric diagnosis in the M.I.N.I. CONCLUSIONS: This study suggests that most of the primary care patients with increased depressive symptoms have a psychiatric disorder. Although depression is the most common diagnosis, there are several other concurrent psychiatric comorbidities. Therefore, diagnostic assessment of primary care patients with a screening score over 9 in the BDI-21 should be reconsidered.

Musculoskeletal Pain in Melancholic and Atypical Depression.

Objective: Pain and depressive disorders often present together, but little is known about the prevalence of pain in depression subgroups. The objective of this study was to examine the possible differences in the prevalence of musculoskeletal pain between participants in melancholic and atypical depression subgroups. Design: Cross-sectional study. Setting: Depression nurse case managers where depression patients receive treatment in primary health care. Subjects: Participants included 413 depression patients and 401 controls. Methods: Depressive symptoms were determined with the Beck Depression Inventory (BDI-21), and diagnosis of depression was confirmed with the Mini-International Neuropsychiatric Interview (MINI). The participants were dichotomized into subgroups with melancholic depression (n = 269), atypical depression (n = 144), and controls (n = 401). Musculoskeletal pain was identified during last four weeks. Participants were enrolled in the study between 2008 and 2009. Results: The prevalence of pain was 37% in controls, 57% in atypical depression, and 71% in melancholic depression (P < 0.001, after adjusting for sex and age). A logistic regression model showed that the odds ratio of pain after adjusting for confounding factors was 2.35 (1.56 to 3.56) with atypical depression compared with controls (P < 0.001) and 4.38 (3.03 to 6.33) with melancholic depression compared with atypical depression (P = 0.006). BDI scores were higher for those with melancholic depression than for those with atypical depression (P < 0.001). Conclusions: Melancholic depression showed to be associated with a higher prevalence of musculoskeletal pain in comparison with atypical depression. This finding highlights the need for further studies about the mechanisms behind the association, particularly in melancholic depression.