ResearchPod Summary
Chronic pain is a global public health concern that often co-occurs with psychological distress. While it is widely acknowledged that depression and anxiety are common among those living with chronic pain, exact prevalence rates have remained unclear due to significant variation in clinical samples and reporting methods. This systematic review and meta-analysis synthesized data from 376 studies representing over 347,000 individuals to quantify the prevalence of these mental health conditions and identify key demographic and clinical moderators.
The researchers performed a comprehensive literature search of MEDLINE, Embase, PsycINFO, and the Cochrane Library for studies published between 2013 and 2023. Included studies were required to report the prevalence of depression or anxiety in adults with chronic pain (excluding headache disorders) using validated clinical assessment tools. The study team used random-effects meta-analyses to pool prevalence rates, assess potential moderation by factors such as pain condition and age, and compare findings against control groups. Methodological rigor was maintained by following PRISMA guidelines and using the Joanna Briggs Institute checklist to evaluate study quality.
The analysis revealed that approximately 39.3% of adults with chronic pain exhibit clinical symptoms of depression, while 40.2% exhibit clinical symptoms of anxiety. Regarding formal diagnoses, 36.7% met criteria for major depressive disorder and 16.7% for generalized anxiety disorder. Prevalence rates were notably higher among individuals with nociplastic pain—such as those with fibromyalgia—compared to those with inflammatory or mechanical conditions like osteoarthritis. Furthermore, the study identified that younger individuals and women are significantly more likely to experience these co-occurring mental health challenges. Notably, the prevalence of depression and anxiety in chronic pain cohorts was significantly higher than in both clinical and nonclinical control groups.
The high co-occurrence of these conditions suggests that current chronic pain management is often insufficient. The authors argue that routine mental health screening should be integrated into standard clinical care for chronic pain patients. There is also a critical need for equitable access to specialized mental health services and the development of innovative, targeted treatments that address both chronic pain and comorbid psychological distress simultaneously, rather than treating them as separate or secondary issues.
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