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Abstract
Background: An association between persistent pain and blood pressure is increasingly recognised but is not fully understood. This systematic review aimed to establish whether chronic pain (CP) is associated with a diagnosis of hypertension (HTN).
Methods: After prospective registration (PROSPERO ID: CRD42025629486), we searched six databases from inception until 8 January 2025 for studies investigating the association between CP and HTN. Title/abstract screening, full-text review, data extraction, and risk of bias assessment were performed by two independent reviewers. Study quality assessment used the Risk of Bias In Non-randomised Studies of Exposures (ROBINS-E) tool. Metaanalysis was carried out using the random effects model.
Results: From 7,973 records, we identified 23 eligible studies for inclusion of which 20 provided suitable data for meta-analysis (total participants (n)=1,594,264). The pooled odds ratio for HTN in people with CP compared to controls was 1.66 (95% CI 1.28-2.15) with high inter-study heterogeneity (I 2=99.8%, Cochran Q=10,132, p<0.001). For specific pain conditions, the pooled odds ratio for HTN was 1.38 (95% CI 1.20-1.58, n=374,234, heterogeneity: I2=65.1%, Cochran Q=14.34, p=0.014) in people with chronic widespread pain and 1.56 (95% CI 1.37-1.79, n=477,681, heterogeneity: I2=0%, Cochran Q=0.17, p=0.92) in people with chronic headache. There was no association of HTN with musculoskeletal pain, lower back pain, or according to gender.
Conclusions: In line with a growing body of evidence in this field, this systematic review and meta-analysis confirms an association between CP and HTN. Further research is warranted to understand this association and elucidate any mediating factors.
Methods: After prospective registration (PROSPERO ID: CRD42025629486), we searched six databases from inception until 8 January 2025 for studies investigating the association between CP and HTN. Title/abstract screening, full-text review, data extraction, and risk of bias assessment were performed by two independent reviewers. Study quality assessment used the Risk of Bias In Non-randomised Studies of Exposures (ROBINS-E) tool. Metaanalysis was carried out using the random effects model.
Results: From 7,973 records, we identified 23 eligible studies for inclusion of which 20 provided suitable data for meta-analysis (total participants (n)=1,594,264). The pooled odds ratio for HTN in people with CP compared to controls was 1.66 (95% CI 1.28-2.15) with high inter-study heterogeneity (I 2=99.8%, Cochran Q=10,132, p<0.001). For specific pain conditions, the pooled odds ratio for HTN was 1.38 (95% CI 1.20-1.58, n=374,234, heterogeneity: I2=65.1%, Cochran Q=14.34, p=0.014) in people with chronic widespread pain and 1.56 (95% CI 1.37-1.79, n=477,681, heterogeneity: I2=0%, Cochran Q=0.17, p=0.92) in people with chronic headache. There was no association of HTN with musculoskeletal pain, lower back pain, or according to gender.
Conclusions: In line with a growing body of evidence in this field, this systematic review and meta-analysis confirms an association between CP and HTN. Further research is warranted to understand this association and elucidate any mediating factors.
| Original language | English |
|---|---|
| Pages (from-to) | 685-696 |
| Journal | British Journal of Anaesthesia |
| Volume | 135 |
| Issue number | 3 |
| Early online date | 9 Jul 2025 |
| DOIs | |
| Publication status | Published - Sept 2025 |
Keywords
- back pain
- chronic headache
- chronic pain
- fibromyalgia
- hypertension
ASJC Scopus subject areas
- Anesthesiology and Pain Medicine
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Partnership for Assessment and Investigation of Neuropathic Pain: Studies Tracking Outcomes, Risks and Mechanisms (PAINSTORM) - (Joint with Universities of Oxford, Ghent and Aberdeen, Imperial College London and King's College London) (Advanced Pain Discovery Platform)
Colvin, L. (Investigator), Smith, B. (Investigator), Steele, D. (Investigator) & Veluchamy, A. (Investigator)
14/07/21 → 13/07/26
Project: Research
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Consortium Against Pain InEquality (CAPE) - The Impact of Adverse Childhood Experiences on Chronic Pain and Responses to Treatment (Joint with University of Aberdeen, University of Edinburgh, University of Stirling and University College, London) (Advanced Pain Discovery Platform)
Brown, A. (Investigator), Colvin, L. (Investigator), Hales, T. (Investigator) & Steele, D. (Investigator)
1/07/21 → 30/06/26
Project: Research
-
Adverse Childhood Experiences: Understanding the Impact on Multimorbidity in Adulthood, a Focus on Chronic Pain, Addiction and Mental Health (Wellcome Trust Clinical PhD Fellowship)
Colvin, L. (Investigator) & Smith, B. (Investigator)
1/11/22 → 31/10/25
Project: Research
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