Work

The differential influence of life stress on individual symptoms of depression

Year: 2015

Type: article

Abstract: OBJECTIVE: Life stress consistently increases the incidence of major depression. Recent evidence has shown that individual symptoms of major depressive disorder (MDD) differ in important dimensions such as their genetic and etiological background, but the impact of stress on individual MDD symptoms is not known. Here, we assess whether stress affects depression symptoms differentially. METHOD: We used the chronic stress of medical internship to examine changes of the nine Diagnostic and Statistical Manual (DSM)-5 criterion symptoms for depression in 3021 interns assessed prior to and throughout internship. RESULTS: All nine depression symptoms increased in response to stress (all P < 0.001), on average by 173%. Symptom increases differed substantially from each other (P < 0.001), with psychomotor problems (289%) and interest loss (217%) showing the largest increases, and suicidal ideation (146%) and sleep problems (52%) the smallest. Symptoms also differed in their severities under stress (P < 0.001): Fatigue, appetite problems and sleep problems were most prevalent; psychomotor problems and suicidal ideation were least prevalent. CONCLUSION: Stress differentially affects the DSM-5 depressive symptoms. Analyses of individual symptoms reveal important insights obfuscated by sum-scores.

Source: Acta Psychiatrica Scandinavica

DOI: 10.1111/acps.12395

Authors: E. I. Fried, R. M. Nesse, C. Guille, S. Sen

Institutions: KU Leuven, Arizona State University, Medical University of South Carolina, University of Michigan, Michigan Medicine

Language: English

Topic: Healthcare professionals’ stress and burnout

Subfield: General Health Professions

Field: Health Professions

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

Funders: Fonds Wetenschappelijk Onderzoek, National Institutes of Health, National Institute of Mental Health