Rethinking mental disorders in COVID-19: evidence from prepandemic longitudinal data

Area of Science:

• Psychiatry
• Mental Health Research
• Epidemiology

Background:

• The COVID-19 pandemic presented unprecedented challenges to global mental health.
• Individuals with pre-existing mental disorders may be particularly vulnerable to pandemic-related stressors.

Purpose of the Study:

• To synthesize longitudinal evidence on mental health outcomes in individuals with pre-existing mental disorders during the COVID-19 pandemic.
• To examine prepandemic symptom measurements and their influence on pandemic-era mental health trajectories.

Main Methods:

• Systematic review and synthesis of longitudinal studies.
• Analysis of mental health outcomes across various pre-existing psychiatric diagnoses.
• Inclusion of studies with prepandemic symptom data for comparative analysis.

Main Results:

• Symptom exacerbation was noted in bulimia nervosa, binge-eating disorder, substance use disorders, and contamination-related obsessive-compulsive disorder.
• Symptom improvement was consistently observed in bipolar disorders.
• Autism spectrum, schizophrenia spectrum, and posttraumatic stress disorders showed mixed symptom patterns.
• Depressive, anxiety, anorexia nervosa, and non-contamination-related obsessive-compulsive disorder symptoms remained largely stable.
• Individuals with chronic or higher prepandemic symptom levels often showed more stable or improving trajectories.

Conclusions:

• The pandemic did not lead to a generalized deterioration across all pre-existing mental disorders.
• Disorder-specific differences in pandemic impact likely stem from interactions between environmental changes and underlying disorder processes.
• Current evidence suggests a more nuanced picture than a universal decline in mental health for this population.