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Pain Medicine

Chronic Pain

Chronic pain management requires phenotype-based assessment, functional goal setting, and multimodal treatment while avoiding reflexive long-term opioid escalation. Identify secondary pain generators, neuropathic features, co-occurring mental health or substance use disorders, and treatment-limiting harms before selecting pharmacologic, rehabilitative, behavioral, or procedural care.

Clinical question: How should clinicians assess and manage chronic pain while prioritizing function, nonopioid therapies, and opioid safety?

First Visit

Identify urgent secondary causes before chronic pain management

Do not attribute persistent pain to chronic primary pain until a dangerous or remediable pain generator has been considered.

Begin by determining whether the presentation is chronic secondary pain, chronic primary pain, or both. Chronic primary pain is pain without a clear underlying cause or pain whose impact is disproportionate to observable injury or disease; this distinction changes whether the next action is disease-directed evaluation versus symptom-focused rehabilitation and behavioral treatment. nice org ukChronic pain (primary and secondary) in over 16s ...

Escalate diagnostic evaluation when the history or examination suggests a structural, inflammatory, malignant, infectious, neurologic, or visceral process that could alter treatment. For low back pain, distinguish axial mechanical pain from radicular symptoms because the evidence base and treatment comparisons differ for radicular low back pain versus acute, subacute, and chronic nonradicular low back pain. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...

Document pain distribution, temporal pattern, quality, aggravating and relieving factors, sensory symptoms, motor deficits, sleep disruption, mood symptoms, activity restriction, current analgesics, substance use history, and prior response to active rehabilitation, psychological treatment, injections, surgery, or opioids. Disease-specific functional scales and neuropathic pain screening instruments can complement the interview and physical examination when pain mechanisms are uncertain. Wolters KluwerNeuropathic pain: clinical classification and...bjanaesthesiaAssessment of painPubMedChronic Pelvic Pain: Assessment, Evaluation, and Objectivation - PMCcks nice org ukAssessment | Diagnosis | Chronic pain - CKS - NICE

Pain phenotype should determine the next diagnostic and treatment step. Wolters KluwerNeuropathic pain: clinical classification and...cks nice org ukAssessment | Diagnosis | Chronic pain - CKS - NICEnice org ukChronic pain (primary and secondary) in over 16s ...
Clinical patternKey discriminatorImmediate next step
Chronic secondary painAn identifiable disease or injury plausibly accounts for pain and its impact. nice org ukChronic pain (primary and secondary) in over 16s ...Pursue disease-specific assessment and treatment while addressing function and analgesia.
Chronic primary painNo clear underlying cause, or impact appears out of proportion to observable injury or disease. nice org ukChronic pain (primary and secondary) in over 16s ...Shift treatment targets toward function, self-management, behavioral interventions, and nonopioid multimodal care.
Neuropathic or mixed painPain descriptors and screening tools suggest neuropathic features. Wolters KluwerNeuropathic pain: clinical classification and...PubMedChronic Pelvic Pain: Assessment, Evaluation, and Objectivation - PMCcks nice org ukAssessment | Diagnosis | Chronic pain - CKS - NICEConfirm the relevant neurologic or regional pain generator and select mechanism-informed therapy rather than escalating nonspecific analgesics.
Radicular low back painRadiating symptoms distinguish it from nonradicular low back pain in treatment evidence. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Use the radicular pathway; do not assume interventions effective for nonradicular pain have the same benefit.

Treatment Planning

Set functional targets before adding or continuing analgesics

A treatment trial should have a defined target, duration, and stopping rule.

Establish one or more observable functional goals before initiating or changing therapy: walking tolerance, return to a specific work task, sleep continuity, self-care, or participation in rehabilitation. Numeric pain ratings remain useful for tracking symptoms, but disease-specific and patient-specific functional scales provide a more decision-relevant measure of whether treatment is improving daily life. bjanaesthesiaAssessment of painPubMedChronic Pelvic Pain: Assessment, Evaluation, and Objectivation - PMC

Use a biopsychosocial formulation when pain severity, disability, and emotional distress are discordant with structural findings or when multiple contributors coexist. Psychological therapies and multidisciplinary rehabilitation are among the evaluated nonpharmacologic options for chronic low back pain, alongside exercise, motor-control exercise, Pilates, tai chi, yoga, acupuncture, massage, and spinal manipulation. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...

Avoid treating chronic pain as a medication-only problem. Nonpharmacologic strategies, including cognitive behavioral therapy and exercise therapy, are alternatives to opioid-centered care and are particularly relevant when the primary treatment objective is restoration of function rather than short-term analgesia. NEJMNon-Opioid Analgesics Role in Pain Management - Pain Management CME

  • At each follow-up, continue a treatment only if the preselected functional outcome, tolerability, and patient priorities support continuation.

  • If disability persists despite low pain ratings, target deconditioning, fear avoidance, mood symptoms, sleep disruption, and workplace or caregiving barriers rather than increasing analgesic exposure alone.

  • If pain improves without functional improvement, reassess the diagnosis, goals, sedation burden, depression, sleep disturbance, and the feasibility of active rehabilitation.

Use treatment selection to match the dominant barrier to function. NEJMNon-Opioid Analgesics Role in Pain Management - Pain Management CMEacpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...bjanaesthesiaAssessment of painPubMedChronic Pelvic Pain: Assessment, Evaluation, and Objectivation - PMC
Dominant clinical barrierManagement emphasisOutcome to monitor
Movement-related disabilityExercise-based therapy, including motor-control exercise, Pilates, tai chi, or yoga when clinically appropriate for chronic low back pain. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Selected activity tolerance and participation.
Fear, distress, maladaptive coping, or pain-related avoidancePsychological therapy, including cognitive behavioral therapy; consider multidisciplinary rehabilitation when needs span physical and psychological domains. NEJMNon-Opioid Analgesics Role in Pain Management - Pain Management CMEacpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Avoidance behavior, treatment engagement, function, and sleep.
Localized musculoskeletal symptoms with uncertain benefit from passive modalitiesDiscuss acupuncture, massage, or spinal manipulation as options evaluated for chronic low back pain; reassess against functional goals. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Short-term symptom change and functional carryover.
Complex pelvic or regional pain syndromeUse pain scales, questionnaires, and focused examination to characterize pain, muscle tenderness, urinary symptoms, and neuropathic features. PubMedChronic Pelvic Pain: Assessment, Evaluation, and Objectivation - PMCMechanism-specific symptoms and patient-defined functional outcomes.

First-Line Management

Build multimodal care around active nonopioid treatment

Select interventions by pain phenotype, functional barrier, and harms rather than by a universal analgesic ladder.

For chronic low back pain, nonpharmacologic options evaluated by the American College of Physicians include exercise, motor-control exercise, Pilates, tai chi, yoga, psychological therapies, multidisciplinary rehabilitation, acupuncture, massage, and spinal manipulation. The appropriate choice depends on patient preference, availability, physical capacity, prior response, and whether the intervention advances a specific activity goal. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...

Pharmacologic care should be phenotype-specific and periodically reassessed for harm. The evidence review for low back pain separately evaluates pharmacologic therapies and adverse events for acute, chronic, and radicular pain, underscoring that a medication strategy should not be extrapolated automatically across pain syndromes. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...

For chronic primary pain, avoid repeatedly searching for a purely structural explanation when assessment supports pain with no clear underlying cause or disproportionate impact. Use a coordinated plan that validates symptoms while directing care toward function, physical activity, psychological treatment, and reduction of iatrogenic medication burden. nice org ukChronic pain (primary and secondary) in over 16s ...

Nonpharmacologic options evaluated for chronic low back pain. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...
Intervention categoryExamplesSelection consideration
Movement-based treatmentExercise, motor-control exercise, Pilates, tai chi, yoga. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Use when the plan includes a measurable mobility, endurance, or participation target.
Psychological and interdisciplinary carePsychological therapies and multidisciplinary rehabilitation. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Prioritize when distress, avoidance, disability, or multiple biopsychosocial contributors limit recovery.
Adjunctive nonpharmacologic modalitiesAcupuncture, massage, spinal manipulation. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Use as a time-limited trial only if it supports the patient’s active functional plan.
Radicular pain pathwayExercise, traction, and other therapies are evaluated separately for radicular low back pain. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Confirm radicular features before applying evidence from chronic nonradicular low back pain.

Opioid Stewardship

Reserve long-term opioids for carefully selected, monitored patients

Opioid continuation is a longitudinal benefit-risk decision, not a response to persistent pain intensity alone.

Long-term opioid administration has minimal effects on chronic pain and can produce tolerance, drowsiness, dependence, and impaired function. Reliable conclusions about long-term effectiveness have also been limited by sparse research. These limitations support prioritizing nonopioid and nonpharmacologic treatment before initiating chronic opioid therapy. NEJMNonnarcotic Methods of Pain ManagementacpjournalsThe Effectiveness and Risks of Long-Term Opioid Therapy ...

Prescription opioid overdose and overdose death can occur even at low opioid dosage levels; risk rises with greater dose and with as-needed prescribing. Therefore, any opioid trial or continuation plan should specify the functional indication, anticipated duration, adverse-effect review, and conditions for tapering or discontinuation. acpjournalsThe Use of Opioids in the Management of Chronic Pain

Use chronic opioid therapy only after explicit patient selection, risk stratification, informed consent, and an opioid management plan. Prior guidance emphasizes monitoring for adverse effects and outcomes related to abuse potential, addiction, and diversion in addition to analgesic benefit. ScienceDirectClinical Guidelines for the Use of Chronic Opioid Therapy in Chronic Noncancer Pain

Screen for opioid use disorder when opioid treatment is ineffective, use becomes compulsive or unsafe, or there are concerning behavioral or monitoring findings. Features of opioid use disorder have been reported in more than 25% of patients receiving opioids for chronic pain, making routine clinical vigilance essential. NEJMPrevention of Opioid Overdose

Structured decisions for patients receiving long-term opioid therapy. NEJMPrevention of Opioid OverdoseNEJMPain Management and Opioids Learning Resources and Clinical Tools - Pain Management CMEacpjournalsThe Use of Opioids in the Management of Chronic PainScienceDirectClinical Guidelines for the Use of Chronic Opioid Therapy in Chronic Noncancer Pain
Finding at reassessmentInterpretationNext action
Meaningful functional benefit without unacceptable harmsBenefit may justify continued treatment only with ongoing safety monitoring. ScienceDirectClinical Guidelines for the Use of Chronic Opioid Therapy in Chronic Noncancer PainContinue the lowest-risk regimen consistent with goals; reassess function, sedation, adherence, and overdose risk.
Pain persists but function does not improveEscalating opioid exposure is unlikely to address the main treatment failure given limited long-term benefit. NEJMNonnarcotic Methods of Pain ManagementacpjournalsThe Effectiveness and Risks of Long-Term Opioid Therapy ...Reassess phenotype and shift toward active nonopioid and behavioral therapies.
Sedation, tolerance, impaired function, or other opioid adverse effectsKnown harms may outweigh analgesic benefit. NEJMNonnarcotic Methods of Pain ManagementScienceDirectClinical Guidelines for the Use of Chronic Opioid Therapy in Chronic Noncancer PainReevaluate the regimen and consider dose reduction or discontinuation with alternative treatment support. acpjournalsPatient Outcomes in Dose Reduction or Discontinuation of ...
Concerning use pattern or suspected opioid use disorderChronic pain treatment may coexist with opioid use disorder; OUD features are reported in more than 25% of chronic-pain opioid recipients. NEJMPrevention of Opioid OverdosePerform diagnostic assessment and link the patient to integrated pain and OUD care. JAMAMedicaid Coverage Policy Variations for Chronic Pain and Opioid Use Disorder TreatmentWileyThe current state of knowledge on care for co‐occurring ...
High respiratory-depression or overdose riskOverdose can occur at low doses and rises with dose and as-needed prescribing. acpjournalsThe Use of Opioids in the Management of Chronic PainUse structured risk assessment such as RIOSORD and intensify monitoring. NEJMPain Management and Opioids Learning Resources and Clinical Tools - Pain Management CME

Tapering or discontinuation

Consider dose reduction or discontinuation when opioid harms outweigh functional benefit, when dangerous adverse effects or unsafe use emerge, or when the original indication no longer justifies exposure. Tapering is a clinical transition that requires reassessment of pain, function, withdrawal risk, mental health, and possible opioid use disorder rather than abrupt removal of care. acpjournalsPatient Outcomes in Dose Reduction or Discontinuation of ...ScienceDirectClinical Guidelines for the Use of Chronic Opioid Therapy in Chronic Noncancer Pain

Escalation

Use procedures and specialty referral only for a defined indication

Escalate when the diagnosis, treatment target, and expected benefit are sufficiently specific to justify procedural risk.

For persistent spine-related pain, distinguish a disease-directed intervention from broad escalation of chronic pain care. Prior injections, radiofrequency ablation, spine surgery, and nonpharmacologic treatments are components of conventional medical management in comparative spinal cord stimulation research, but their use should follow a specific pain generator and treatment rationale rather than nonspecific refractory pain. JAMALong-term Outcomes in Use of Opioids, Nonpharmacologic Pain Interventions, and Total Costs of Spinal Cord

Spinal cord stimulation evidence requires cautious patient selection. Some studies report pain benefit at 6 months compared with conventional medical management, but benefits often dissipate after 12 to 24 months; placebo-controlled studies show smaller effects, and long-term randomized evidence has been limited. JAMALong-term Outcomes in Use of Opioids, Nonpharmacologic Pain Interventions, and Total Costs of Spinal Cord

Refer for multidisciplinary pain care when pain phenotype remains unclear, function continues to decline despite an organized nonopioid plan, opioid tapering is complicated by suspected opioid use disorder, or a procedure is being considered without a well-defined diagnostic target. Multidisciplinary rehabilitation is an evaluated option for chronic low back pain and may be preferable to serial passive interventions when disability has multiple drivers. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...WileyThe current state of knowledge on care for co‐occurring ...

Escalation choices should be linked to a defined clinical objective. JAMALong-term Outcomes in Use of Opioids, Nonpharmacologic Pain Interventions, and Total Costs of Spinal CordacpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...WileyThe current state of knowledge on care for co‐occurring ...
Escalation scenarioAppropriate objectiveKey tradeoff
Multidisciplinary rehabilitationAddress persistent disability with physical and psychological contributors. acpjournalsNoninvasive Treatments for Acute, Subacute, and Chronic ...Requires patient engagement and service access but targets function beyond analgesia.
Interventional spine procedureTreat a defined structural or pain-generator hypothesis.Avoid serial procedures when diagnostic specificity and functional benefit are absent.
Spinal cord stimulationConsider only after careful selection for a defined indication and informed discussion. JAMALong-term Outcomes in Use of Opioids, Nonpharmacologic Pain Interventions, and Total Costs of Spinal CordReported short-term benefit may diminish after 12 to 24 months; placebo-controlled effects are smaller. JAMALong-term Outcomes in Use of Opioids, Nonpharmacologic Pain Interventions, and Total Costs of Spinal Cord
Integrated pain and OUD careTreat concurrent chronic pain and opioid use disorder. JAMAMedicaid Coverage Policy Variations for Chronic Pain and Opioid Use Disorder TreatmentWileyThe current state of knowledge on care for co‐occurring ...Coverage and access to behavioral and integrative services vary substantially. JAMAMedicaid Coverage Policy Variations for Chronic Pain and Opioid Use Disorder Treatment

References

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