The coexistence of chronic pain and Post-Traumatic Stress Disorder (PTSD) constitutes one of the greatest clinical challenges in pain medicine. Estimates indicate that between 35% and 50% of patients with PTSD diagnosis live with persistent chronic pain, and that comorbidity amplifies the intensity of both conditions — a phenomenon termed mutual maintenance in the scientific literature. Identifying which non-pharmacologic interventions can simultaneously reduce PTSD symptoms and pain was the objective of a comprehensive systematic review and meta-analysis published in PAIN, the official journal of the International Association for the Study of Pain (IASP).
The central result is unequivocal and with immediate practical implications: only therapies with direct focus on trauma — trauma-focused cognitive-behavioral therapy (TF-CBT), EMDR, Narrative Exposure Therapy (NET), and Emotional Freedom Technique (EFT) — produced statistically significant benefits in both outcomes. Mind-body and peripheral modulation interventions, including acupuncture, did not reach significance for pain or PTSD in this specific population.
Epidemiology of the PTSD-chronic pain comorbidity
PTSD and chronic pain share neurobiologic substrates that mutually reinforce each other. Alterations in the hypothalamic-pituitary-adrenal axis, central sensitization, and dysfunction of the medial prefrontal córtex create a cycle in which trauma amplifies pain perception and pain, in turn, functions as a trigger for traumatic memories. Populations with high prevalence include war veterans, victims of interpersonal violence, survivors of severe accidents, and patients with chronic low back pain whose onset was associated with a traumatic event.
PTSD + CHRONIC PAIN — STUDY OVERVIEW
Methodology: four categories of intervention
The review conducted by O’Donnell ML et al., published in PAIN (Vol. 167, n. 4, 2026), searched seven electronic databases from January 1988 to August 2024. The 30 identified interventions were organized into four categories:
The four categories of intervention evaluated
- Trauma-focused therapies (7 RCTs): TF-CBT, EMDR, Narrative Exposure Therapy (NET), Emotional Freedom Technique (EFT)
- Non-trauma-focused cognitive-behavioral therapies (7 RCTs): standard CBT, Acceptance and Commitment Therapy (ACT), internet-based variants
- Mind-body interventions (9 RCTs): yoga, mindfulness-based stress reduction, somatic experiencing
- Peripheral modulation (3 RCTs): acupuncture (Engel et al., 2014), Tennant Biomodulator, dry needling
The primary outcomes were pain intensity and severity of PTSD symptoms, both measured by validated instruments (PCL-5, CAPS, numerical pain scales).
Results: trauma-focused therapies stand out alone
EFFECTS BY INTERVENTION CATEGORY
| CATEGORY | RESULTS (SMD) |
|---|---|
| Trauma-focused therapies (TF-CBT, EMDR, NET) | PTSD: SMD = -0.75 (95% CI: -1.37 to -0.12) ✓ Pain: SMD = -0.34 (95% CI: -0.56 to -0.11) ✓ |
| Non-trauma-focused CBT / ACT | PTSD: SMD = -0.08 (p = 0.42, NS) Pain: SMD = -0.01 (p = 0.92, NS) |
| Mind-body interventions (yoga, mindfulness) | PTSD: SMD = -0.12 (p = 0.20, NS) Pain: SMD = -0.14 (p = 0.33, NS) |
| Peripheral modulation (acupuncture, dry needling) | PTSD: SMD = -0.26 (p = 0.44, NS) Pain: SMD = -0.13 (p = 0.53, NS) |
Notable individual results include Emotional Awareness and Expression Therapy (EAET) versus standard CBT, with a large effect favorable to EAET on pain (SMD = 0.81; p < 0.001), and the RISE intervention (Rehabilitation Integrating Somatic Experience), with medium effect on pain (SMD = -0.53; p < 0.05).
TRAUMA-FOCUSED THERAPIES — MAIN DATA
The role of acupuncture and peripheral modulation
The peripheral modulation category included three trials: acupuncture (Engel et al., 2014), Tennant Biomodulator, and dry needling. The results did not reach statistical significance: SMD = -0.26 for PTSD (I² = 79.8%; p = 0.44) and SMD = -0.13 for pain (p = 0.53).
Frequently Asked Questions
The theory posits that PTSD and chronic pain feed back on each other: PTSD hypervigilance amplifies pain perception through central sensitization, while pain functions as a trigger for traumatic memories and flashbacks. Each condition exacerbates the other, creating a cycle more resistant to treatment than either alone. Interventions that break only one link — for example, reducing only pain — tend to produce limited and short-lasting gains in this population.
The only acupuncture trial included (Engel et al., 2014) evaluated acupuncture in veterans with PTSD and chronic pain and did not demonstrate significant benefit versus control. It is fundamental to contextualize: this meta-analysis covers a specific population with comorbid PTSD + chronic pain, and its result does not extend to chronic pain populations without associated psychological trauma. The evidence base for acupuncture in chronic pain without PTSD — low back pain, headache, osteoarthritis — is substantially more robust and positive.
EMDR (Eye Movement Desensitization and Reprocessing) is a psychotherapy that uses bilateral stimulation (eye movements, tapping, or alternating sounds) to facilitate the reprocessing of traumatic memories. In the PTSD-pain context, the proposed mechanism is that the reprocessing of traumatic memory reduces the activation of the threat system (amygdala, HPA axis), decreasing the hypervigilance that amplifies pain. EMDR is recommended by WHO and the American Psychological Association for PTSD.
The most widely used tool is the PCL-5 (PTSD Checklist for DSM-5), a 20-item self-administered questionnaire, available free of charge and validated in Portuguese. Scores ≥ 33 suggest probable PTSD and indicate referral for specialized assessment. Simple triage questions include inquiry about traumatic event, recurrent nightmares, avoidance of situations that recall the trauma, and hypervigilance. Family physicians and pain specialists are in a privileged position for this triage.
This study indicates that an integrated therapeutic plan should minimally include a trauma-focused therapy (TF-CBT or EMDR) conducted by a qualified psychologist or psychiatrist. Adjuvants such as medical acupuncture, supervised exercise, and rational pharmacotherapy for pain may complement, but not replace, the trauma-processing component. Chronic pain centers and university mental health outpatient clinics have implemented these integrated protocols with good results in populations of veterans and victims of violence.
Sources consulted
- O’Donnell ML et al. Systematic review and meta-analyses of nonpharmacological interventions for co-occurring chronic pain and posttraumatic stress disorder. Pain. 2026;167(4):756-766. DOI: 10.1097/j.pain.0000000000003880.
- Engel CC et al. Randomized effectiveness trial of a brief course of acupuncture for posttraumatic stress disorder. Medical Care. 2014.
- Otis JD, Keane TM, Kerns RD. An examination of the relationship between chronic pain and post-traumatic stress disorder. J Rehabil Res Dev. 2003.
- World Health Organization. WHO guidelines for the management of conditions specifically related to stress. Geneva: WHO, 2013.
- Leeuw M, Goossens ME, Linton SJ, et al. The fear-avoidance model of musculoskeletal pain: current state of scientific evidence. Clin J Pain. 2007.
Fonte Original
PAIN (IASP)(em inglês)Founded in 1989 by physicians trained at the University of São Paulo (USP) and specialized in China, CEIMEC is a Brazilian national reference in the teaching and practice of medical acupuncture. With more than 3,000 physicians trained over 35 years, it collaborates with HC-FMUSP and is recognized by the Brazilian Medical College of Acupuncture (CMBA/AMB).