Introduction: Why Pain and Suffering Damages Are Difficult to Quantify
Pain is among the most universal human experiences and among the most difficult to translate into compensable legal damages. It is invisible to third parties, variable across individuals, impossible to directly measure, and subject to the full range of human cognitive and emotional factors that affect self-report. Yet pain and the functional limitation it produces are the most consequential forms of harm in the majority of serious personal injury cases — and the component of the damages picture that is most frequently contested, undervalued, and vulnerable to appellate challenge.
The Texas Supreme Court's 2023 decision in Gregory v. Chohan intensified this challenge by requiring that non-economic damages — pain and suffering, mental anguish, loss of enjoyment of life, disfigurement — be grounded in a rational evidentiary connection between the evidence presented and the amount the jury awards. Arbitrary anchor figures unsupported by clinical evidence are insufficient. Verdicts that exceed what the record can support are subject to remittitur or reversal. The consequence for trial practice is that the evidentiary architecture supporting non-economic damages must be substantially more rigorous than it was in the era when closing argument could do the work that evidence now must do.
This is where pain management expert testimony becomes strategically essential. A board-certified pain management physician — one who actively evaluates and treats the conditions at issue — provides what Gregory v. Chohan requires: a systematic, clinically grounded analysis linking the plaintiff's documented diagnosis, objective examination findings, validated functional assessments, and longitudinal treatment record to a specific picture of pain severity and functional impairment. That analysis does not replace the jury's role in assigning a dollar value to intangible harm — it provides the rational evidentiary foundation from which the jury can do so.
This article explains what Gregory v. Chohan held and why it matters, how pain management experts objectively evaluate pain and functional impairment, what clinical tools are most relevant to non-economic damages analysis, and how plaintiff and defense attorneys should structure their cases in light of the decision.
Gregory v. Chohan Explained
Background and Facts
Gregory v. Chohan arose from a catastrophic commercial trucking accident in which an improperly secured load caused a multi-vehicle collision resulting in multiple fatalities. The plaintiffs — surviving family members — sought damages including wrongful death, bystander claims, and survival claims. The jury awarded substantial non-economic damages, including very large figures for mental anguish. The trial court entered judgment on the verdict; the court of appeals affirmed.
The Texas Supreme Court reversed and remanded on the non-economic damages, holding that the evidence presented was legally insufficient to support the specific amounts awarded. The Court's analysis rejected the argument that non-economic damages are inherently immune from meaningful appellate review because they are intangible. Instead, it held that the jury's role is not to assign a value arbitrarily — it is to assess damages based on evidence from which a rational connection between the evidence and the award can be established.
The Rational Connection Requirement
The core holding of Gregory v. Chohan on non-economic damages is the rational connection requirement: there must be some evidence from which the jury could rationally arrive at the amount it awards. This does not mean that pain and suffering must be mathematically calculated or that a formula must be applied. It means that the evidence must provide a foundation — a basis in the record — from which a reasonable jury could conclude that the awarded amount is appropriate to the nature and severity of the harm documented.
The Court acknowledged that non-economic damages — unlike economic damages — do not have a market value and cannot be calculated from bills or wage records. But it rejected the inference that this difficulty eliminates the need for evidentiary grounding. What the law requires is not precision but a rational connection: evidence of the nature, severity, and duration of the plaintiff's pain and suffering from which a jury can make a reasoned assessment, not merely an emotional reaction to the narrative presented in closing argument. This rational connection analysis builds on the evidentiary sufficiency framework the Court established in Golden Eagle Archery, Inc. v. Jackson, 116 S.W.3d 757 (Tex. 2003), applying it to the anchoring and evidence-sufficiency questions that define modern non-economic damages practice.
Why Unsupported Anchoring Is Problematic
"Anchoring" refers to the practice of proposing a specific dollar figure for non-economic damages in closing argument — sometimes with reference to a per-diem calculation (e.g., "X dollars per day for every day of suffering") or a lump-sum figure proposed without specific evidentiary grounding. Gregory v. Chohan does not prohibit argument about specific figures, but it requires that the figure proposed be supportable by something in the record beyond the lawyer's characterization of the plaintiff's experience.
The practical implication is that a damages figure proposed in closing without an evidentiary anchor in the clinical record — physician testimony, validated assessment scores, documented functional limitations — is exposed to reversal if the jury awards it. Anchoring is not inherently improper, but the anchor must be tethered to the evidence. A closing argument that asks the jury to award a specific figure "for what she has gone through" without a clinical witness who documented what that experience consisted of, in what severity, over what duration, creates appellate risk that a well-structured pain management expert opinion eliminates.
Practical Implications for Texas Attorneys
Gregory v. Chohan has several direct implications for trial preparation. First, non-economic damages must be supported by specific evidence of pain severity and functional impairment, not merely a narrative of the plaintiff's experience. Second, the evidence must come from the record — treating notes, expert testimony, validated instruments — not just from client testimony alone. Third, the more objective and clinically grounded the evidence, the more defensible the award on appeal. Fourth, defense counsel has new grounds to challenge verdict amounts that exceed what a carefully assembled clinical record supports. A pain management expert engaged early in the case — for evaluation, records review, or IME — can be the architect of the evidentiary structure that addresses each of these implications directly. For the full framework of expert report requirements and qualification standards applicable in Texas personal injury and malpractice cases, see the Texas Chapter 74 expert witness guide.
Mapping Clinical Evidence to Texas Pattern Jury Charge Elements
The Texas Pattern Jury Charge for personal injury (PTJC 7.1) asks the jury to award damages separately for past and future: physical pain and mental anguish, physical impairment, disfigurement, and — in wrongful death and survival cases — loss of consortium. Each category has distinct evidentiary requirements that map directly to specific components of a pain management expert's opinion. Physical pain and mental anguish is supported by validated instrument scores, longitudinal pain documentation, and the physician's clinical assessment of pain severity and psychological impact. Physical impairment — which Texas courts have defined as the loss of physical capacity to perform activities that are part of an ordinary life, distinct from pain itself — is supported by ROM measurements, Functional Capacity Evaluation results, ADL limitation documentation, and work restriction records. Disfigurement in pain cases is supported by permanent physical changes: trophic changes in CRPS, surgical scarring from SCS or ITP implantation, or visible deformity from skeletal injury. Structuring the pain management expert's opinion to address each charge element specifically — rather than delivering a general pain narrative — allows the attorney to map expert testimony directly to the jury charge during trial and closing argument, providing the rational connection the Court requires at each compensable damage category.
The Difference Between Pain, Impairment, and Damages
A critical source of confusion in non-economic damages litigation is the failure to distinguish between three related but legally distinct concepts: pain symptoms, functional impairment, and compensable damages. Pain management expert testimony is most effective when it engages all three in a structured way.
Pain Symptoms
Pain symptoms are the subjective experience of nociception — what the plaintiff reports to treating physicians, what they describe to family and coworkers, and what they convey to the jury. Pain symptoms are relevant evidence, but they are inherently unverifiable by direct measurement. Their evidentiary value in litigation depends on whether they are consistent with the objective clinical picture, whether they are documented longitudinally in the treating record, and whether a clinician with relevant expertise has evaluated their clinical basis. A plaintiff's self-report of 10/10 pain at every physician visit is not, by itself, legally sufficient evidence of compensable suffering — what makes it legally significant is the physician's clinical assessment of whether that self-report is consistent with the documented diagnosis and examination findings.
Functional Impairment
Functional impairment is the measurable effect of pain on what the plaintiff can do — the activities of daily living they can no longer perform, the work they can no longer sustain, the sleep they can no longer maintain, the recreational activities they can no longer enjoy. Functional impairment is more objectively evaluable than pain symptoms because it can be measured with validated instruments, documented through clinical examination (range of motion, strength testing, gait assessment), and correlated with the known functional consequences of the documented diagnosis. Functional impairment is the bridge between the subjective symptom and the compensable harm — it is the evidence that translates "my back hurts" into a documented, clinically grounded picture of a life altered by injury.
Disability
Disability, in the clinical and regulatory sense, refers to a limitation of functional capacity that affects the plaintiff's ability to perform specific tasks — typically occupational tasks — at a level consistent with prior baseline. Clinical disability determinations are made using validated instruments and standardized criteria. Legal disability determinations under workers' compensation, Social Security, and long-term disability systems use their own standards that may or may not align with the clinical definitions. In personal injury litigation, clinical disability documentation is relevant to non-economic damages because it provides an independent, third-party assessment of functional limitation that is not solely dependent on the plaintiff's self-report.
Economic vs. Non-Economic Damages
Economic damages — past and future medical expenses, lost wages, loss of earning capacity — are quantifiable from the record and are less affected by Gregory v. Chohan's rational connection analysis because they have an inherent evidentiary foundation in bills, wage records, and future care projections. Non-economic damages — pain and suffering, mental anguish, loss of enjoyment of life, disfigurement — are the intangible harms for which no bill exists, and which require the physician expert to construct the clinical picture that gives the jury a rational basis for assessment. The pain management expert's role is different for these two damage categories: for economic damages, the physician projects and prices the future treatment; for non-economic damages, the physician documents and explains the nature and severity of the harm.
How Pain Management Experts Objectively Evaluate Pain
The objective evaluation of pain by a pain management physician is not a simple process of accepting or rejecting the plaintiff's self-report. It is a multi-component clinical assessment that evaluates whether the reported symptoms are consistent with and supported by objective clinical findings across multiple independent domains. Each component of the evaluation contributes to the overall clinical picture.
A. Clinical History
The clinical history establishes the plaintiff's symptom pattern, the onset relative to the incident, the quality and distribution of pain, the activities that aggravate or relieve symptoms, and the treatment response to date. The history is taken directly from the plaintiff in an independent examination, but its evidentiary value in litigation derives primarily from its consistency with the longitudinal treating record. A history that is substantially inconsistent with what the plaintiff has told treating physicians across dozens of visits over years is a significant finding that bears directly on the reliability of the current complaint. Conversely, a history that is highly consistent with the longitudinal record — with minor variation attributable to normal symptom fluctuation — is clinical evidence supporting the reliability of the self-report.
B. Physical Examination
The physical examination is the core of the objective pain assessment. Relevant findings in chronic pain evaluations include: spinal range of motion measurements (documented in degrees with specific quantitative values, not qualitative descriptors); paravertebral muscle spasm and tenderness to palpation; provocative test results (straight leg raise, Spurling's test, FABER/FADIR); neurological examination findings (motor strength by muscle group, deep tendon reflexes, sensory testing); and for CRPS and peripheral nerve conditions, autonomic examination findings (skin temperature asymmetry, skin color changes, edema, allodynia, hyperalgesia). The examination findings are documented in specific, measurable terms — not merely "limited" or "painful" — so that they can be correlated with the plaintiff's complaints and withstand scrutiny at deposition.
C. Range of Motion Testing
Quantitative range of motion testing provides one of the most objectively documentable correlates of pain-related functional limitation. When lumbar flexion is measured at 30 degrees against a normal of 60-80 degrees, that specific finding can be correlated with the reported pain pattern, with the imaging findings at the affected levels, and with the functional limitations the plaintiff reports for bending, lifting, and related activities. Range of motion findings can be assessed for consistency across multiple examinations — a plaintiff who shows 30-degree lumbar flexion at a defense IME but 65-degree flexion on a Functional Capacity Evaluation administered the same week raises a credibility question; one who consistently shows 30-degree flexion across multiple independent examinations has an objectively documented functional limitation.
D. Neurological Examination
The neurological examination documents objective findings in specific nerve distributions — findings that the plaintiff cannot control or fabricate through effort. A dermatomal pattern of sensory deficit in the L5 distribution, consistent with the documented L4-5 disc herniation on MRI, is an objective clinical finding that independently corroborates both the structural pathology and its neurological consequence. Motor weakness in a specific myotomal distribution, assessed by manual muscle testing and confirmed by the pattern of weakness rather than pain-related inhibition, similarly provides objective neurological evidence of nerve root dysfunction. Reflex changes — hypoactive or absent deep tendon reflexes in a specific distribution — are among the most reliable objective neurological findings in radiculopathy cases because they are not subject to voluntary control.
E. Functional Assessment
Functional assessment through validated instruments provides a standardized, normed, and clinically established measure of how pain affects what the plaintiff can do. The Pain Disability Index, the Oswestry Disability Index, and PROMIS instruments each provide a quantitative score that can be compared to published population norms and to the plaintiff's own scores at different points in the clinical trajectory. The physician expert who has administered or reviewed these instruments can explain to the jury not just the plaintiff's score but what that score means in clinical context — that a PDI score of 45 places the plaintiff in the severe disability range, that their ODI score of 52% is classified as crippling disability under published scoring criteria, that their PROMIS Physical Function score is 1.8 standard deviations below the population mean for their age group. This level of clinical specificity is exactly what Gregory v. Chohan's rational connection requirement contemplates.
F. Imaging Correlation
Imaging findings do not prove or disprove pain, but they provide the structural context within which pain complaints are evaluated. A plaintiff reporting severe bilateral arm pain with documented C5-6 and C6-7 disc herniations producing nerve root compression on MRI has a structural correlate for the reported symptom pattern. A plaintiff reporting severe back and leg pain with a previously operated L4-5 level showing post-surgical epidural fibrosis and continued nerve root involvement has a structural explanation for ongoing radicular symptoms. The pain management expert correlates the imaging findings with the reported symptoms, the examination findings, and the treatment trajectory — not to require imaging as a prerequisite for pain, but to assess whether the imaging is consistent or inconsistent with the clinical picture and to explain what the imaging does and does not evaluate for conditions where structural imaging is expected to be normal.
G. Response to Treatment
The plaintiff's documented response to treatment is among the most objective data available in the clinical record. Pain that responds partially to epidural steroid injections, with documented 40-50% reduction at post-procedure visits followed by documented recurrence at 6-8 weeks, provides a clinically consistent picture of a painful condition that responds temporarily to anti-inflammatory treatment and then recurs — which is exactly the expected clinical trajectory for lumbar radiculopathy with significant disc herniation. Treatment response documentation also addresses duration and persistence: a plaintiff who has been treated with serial injections for three years without resolution has a longitudinal record of persistent pain that is substantially more compelling than one whose pain is documented over three months. The pain management expert synthesizes the treatment response data into a clinical narrative of condition severity, persistence, and trajectory.
H. Longitudinal Medical Records Review
The longitudinal medical records review is the foundation of a credible pain and suffering opinion. It establishes the pre-incident baseline, documents the post-incident clinical trajectory, identifies the consistency of complaints across multiple treating providers and multiple time points, and reveals any inconsistencies that require explanation. A plaintiff who reports 10/10 pain at every visit but was documented as going on a hiking trip at one point in the record has an inconsistency that the defense will raise at trial — the records review identifies this and allows the expert to address whether it is clinically meaningful or contextually explicable. More often, the records review reveals a consistent longitudinal picture of documented pain and functional limitation across years of treating notes — which is exactly the type of evidence that can support a rational connection between the clinical record and a non-economic damages award. Establishing the pre-incident baseline is especially important in spine injury cases where degeneration is present; for the clinical methodology, see the article on pre-existing degeneration vs. aggravation in spine injury cases.
Validated Pain and Disability Instruments
Validated clinical instruments provide standardized, normed, and psychometrically established measures of pain and functional limitation. They are more durable in litigation than informal assessments because they have established reliability, validity, and published interpretation criteria that allow the expert to place the plaintiff's results in clinical context.
Pain Disability Index (PDI)
The PDI is a seven-item self-report instrument measuring disability in seven life domains: family/home responsibilities, recreation, social activity, occupation, sexual behavior, self-care, and life-support activities. Each domain is scored 0-10, for a total of 0-70, with higher scores indicating greater disability. The PDI has published norms and clinical interpretation criteria: scores of 30-49 reflect moderate to severe disability; scores of 50 and above reflect severe disability. In litigation, the PDI is most powerful when administered at multiple points in the clinical trajectory — showing disability before and after the incident, or showing persistent disability over a long post-incident period. Limitations include patient self-report bias and susceptibility to coaching. Correlation with independent examination findings is essential to counter these challenges.
Oswestry Disability Index (ODI)
The ODI is a ten-item instrument specific to low back pain and spinal conditions, measuring disability in ten domains including pain intensity, personal care, lifting, walking, sitting, standing, sleeping, social life, traveling, and changing degree of pain. Scores are reported as a percentage: 0-20% minimal disability; 21-40% moderate disability; 41-60% severe disability; 61-80% crippling; 81-100% bed-bound or exaggerating. The ODI is among the most widely validated and most frequently cited instruments in spinal pain research and clinical practice, making it a natural fit for spinal injury litigation. Its limitation is the same as for the PDI — self-report susceptibility — and it is most effective when correlated with examination findings and imaging consistent with the claimed level of impairment.
PROMIS Measures
Patient-Reported Outcomes Measurement Information System (PROMIS) instruments are NIH-developed measures covering physical function, pain intensity, pain interference, fatigue, sleep disturbance, depression, and anxiety. PROMIS scores are T-scores normed to a general population mean of 50 with a standard deviation of 10, allowing direct comparison between the plaintiff's scores and population norms. In litigation, PROMIS measures offer a specific advantage: a plaintiff who scores 1.5-2.0 standard deviations below the population mean on Physical Function, and 1.5-2.0 standard deviations above the population mean on Pain Interference and Depression, presents a clinically coherent, normed picture of a person whose pain substantially impairs physical function and psychological well-being relative to the general population. This population-referenced comparison provides a concrete, understandable basis for explaining the severity of impairment to a jury.
Numeric Rating Scale (NRS)
The NRS — the familiar 0-10 pain rating — is the most commonly recorded pain measure in treating records and the least litigation-durable as a standalone damages instrument. Its advantages are its ubiquity and ease of comparison across visits. Its limitations are severe for litigation purposes: it measures only pain intensity at a single moment, provides no functional information, is entirely self-report based, and is subject to the "10 out of 10" ceiling effect seen in many litigation-related records. The NRS is most useful in litigation when it is used longitudinally — showing consistent documented pain levels across dozens of visits over years — and when it is correlated with independent clinical findings and functional instruments. As a standalone damages foundation, a series of 10/10 NRS scores is insufficient under Gregory v. Chohan; as a component of a multi-dimensional assessment, it contributes to the clinical picture.
Malingering, Symptom Magnification, and Symptom Validity
Defense experts in Texas personal injury cases routinely raise symptom magnification, secondary gain, and malingering to challenge pain and suffering claims. Understanding how these arguments are structured — and how a competent pain management physician responds to them — is essential for attorneys on both sides of the case.
Malingering is the deliberate fabrication or gross exaggeration of symptoms for external incentives — financial compensation, avoidance of legal consequences, or other tangible gain. It is a formal DSM-5 category requiring specific evidence of intentional deception. Symptom magnification is a broader clinical observation that a patient's reported symptoms appear disproportionate to the objective findings — it does not require deliberate intent and may reflect pain catastrophizing, psychological amplification of genuine nociception, or learned pain behavior as much as conscious fabrication. Conflating the two is a methodological error that undermines the credibility of any expert, plaintiff or defense, who makes it.
Waddell Signs
Waddell signs are five categories of non-organic physical examination findings — tenderness, simulation tests, distraction tests, regional disturbances, and overreaction — originally developed to identify spine patients whose examination behavior was inconsistent with structural pathology. Three or more positive Waddell signs were historically proposed as indicative of a non-organic component. Defense experts frequently cite positive Waddell signs as evidence of symptom magnification or malingering. The clinical literature has substantially qualified this use: multiple published studies document positive Waddell signs in patients with confirmed organic pathology, severe psychosocial distress, and central sensitization — all conditions consistent with genuine, severe chronic pain. A single positive finding, or findings in a patient with documented anxiety, PTSD, or central sensitization syndrome, carries significantly less diagnostic weight than the original framework implied. A plaintiff expert challenged on Waddell signs must contextualize the finding within the full clinical picture — structural pathology, examination findings in other domains, longitudinal record consistency — rather than treat a positive sign as a categorical indicator of fabrication.
Symptom Validity Testing
Symptom validity tests — including forced-choice memory tests and embedded validity measures administered as part of neuropsychological evaluations — assess whether a patient's performance is consistent with genuine impairment or with intentional suppression. In pain litigation where cognitive or psychological claims accompany physical pain claims, performance on validity measures provides an independent, objective check on the reliability of the overall self-report. Failure on well-validated symptom validity measures is meaningful clinical evidence that the self-reported limitations require corroboration from objective findings. Conversely, passing validity measures across a full evaluation battery independently corroborates that the reported limitations reflect genuine impairment rather than motivated distortion.
Pain Catastrophizing Scale
The Pain Catastrophizing Scale (PCS) measures a patient's tendency toward magnified negative appraisal of pain — rumination, magnification of pain threat, and perceived helplessness in the face of pain. High PCS scores are a documented predictor of worse pain outcomes and greater functional limitation, independent of structural pathology. They are not evidence of fabrication; they are a recognized psychological pain amplification mechanism that produces real, measurable functional limitation and requires active clinical management. A defense expert who argues that a high PCS score proves the plaintiff is exaggerating misrepresents the published evidence on the instrument — high PCS scores are associated with genuinely poor functional outcomes and clinical trajectories that require treatment, not dismissal.
Secondary Gain and Litigation Context
Secondary gain refers to external incentives — litigation proceeds, disability benefits, avoidance of occupational demands — that may influence symptom reporting. Secondary gain is a legitimate clinical consideration, but it is not a diagnosis and does not by itself establish malingering or even symptom magnification. The existence of litigation does not prove the plaintiff's pain is fabricated; by this definition, every plaintiff in every personal injury case has a secondary gain incentive. A competent pain management expert acknowledges secondary gain as a contextual variable while grounding the opinion in objective findings, validated instruments, Functional Capacity Evaluation results, and longitudinal record consistency — sources of clinical evidence that are independent of the plaintiff's current incentive structure. The defense argument that secondary gain explains the plaintiff's symptoms requires specific clinical evidence of fabrication, not merely the observation that the plaintiff stands to benefit financially.
Objective Findings Commonly Seen in Chronic Pain Cases
The following conditions produce objective clinical findings that pain management experts document and correlate with functional impairment in litigation. Each has a characteristic examination pattern that can be independently verified and correlated with the plaintiff's reported pain.
Disc Herniation and Radiculopathy
Lumbar and cervical disc herniation with radiculopathy produces dermatomal sensory changes, myotomal motor weakness, reflex changes, and positive provocative test results (straight leg raise, Spurling's test) that are clinically verifiable and specific to the affected nerve root. The combination of MRI-confirmed disc herniation with neurological examination findings in the distribution of the compressed nerve root is one of the strongest objective correlates of pain and functional limitation available in spine injury litigation. The pain management expert documents these findings in specific anatomical terms, correlates them with the imaging, and explains what nerve root dysfunction at the affected level produces in terms of daily functional limitation.
Complex Regional Pain Syndrome
CRPS produces a distinctive pattern of objective examination findings — allodynia, temperature asymmetry, skin color changes, edema, trophic changes, and motor involvement — that form the Budapest Criteria diagnostic standard. These findings are clinician-documented at examination, not solely self-reported by the patient, which makes them particularly valuable in pain and suffering analysis. A plaintiff whose Budapest Criteria findings are well-documented across multiple clinical examinations has an objective, clinician-verified picture of a pain condition that is both severe and distinctive. For the complete CRPS litigation framework, see the CRPS expert witness guide.
Post-Laminectomy Syndrome
Post-laminectomy syndrome — persistent pain after spinal surgery — presents challenges for objective documentation because the structural pathology driving the pain (epidural fibrosis, adjacent segment disease, residual nerve root irritation) may not be prominently visible on standard MRI sequences. The examination findings — dermatomal sensory changes, reflex changes, functional range of motion limitation — combined with a treatment record showing persistent interventional management needs, provide the objective clinical foundation for post-laminectomy syndrome pain and suffering claims. A complete causation analysis establishing that the surgical outcome was a consequence of the incident-related injury is a prerequisite for using post-laminectomy syndrome findings in the damages analysis. For the methodology underlying that analysis, see how pain management experts evaluate causation in personal injury cases.
Peripheral Nerve Injury
Peripheral nerve injury produces objective electrodiagnostic findings — prolonged distal latencies, reduced conduction velocities, denervation changes on EMG — that independently document nerve damage and correlate with the plaintiff's reported neuropathic pain. The combination of electrodiagnostic findings, dermatomal sensory examination findings, and reported neuropathic symptoms (burning, tingling, lancinating pain) in a consistent distribution provides a multi-source objective documentation of the neuropathic pain condition that is significantly more durable than self-report alone.
Spinal Cord Stimulation Patients
A plaintiff who has undergone spinal cord stimulator implantation has an objective clinical marker of a pain condition so severe and refractory that a board-certified pain management physician independently assessed it as warranting major surgical intervention. The implant records, trial documentation, and post-implant programming visits collectively document the clinical trajectory of a condition that did not respond adequately to conservative or intermediate interventional treatment and required escalation to neuromodulation. This is some of the strongest objective evidence of chronic pain severity available in personal injury litigation.
Functional Impairment and Real-World Impact
Functional impairment analysis translates the clinical findings into the language of everyday life — what the plaintiff can no longer do, at what level of limitation, and with what clinical basis. It is the most direct evidence relevant to the jury's task of assessing non-economic damages.
Activities of Daily Living
ADL limitations — inability to bathe independently, difficulty dressing, inability to perform household tasks that previously required no thought — document the pervasive functional impact of severe chronic pain. The physician expert documents ADL limitations through the functional assessment instruments, through the plaintiff's reports to treating physicians in the longitudinal record, and through the physical examination findings that are consistent with the claimed limitation. The goal is to connect the clinical finding to the functional consequence: "The plaintiff's documented 35-degree lumbar flexion limitation, consistent with the severe paravertebral muscle spasm and L4-5 stenosis on MRI, means that the stooping, bending, and crouching required for routine household tasks — loading a dishwasher, picking up objects from the floor, bathing — are activities performed in documented pain with documented functional restriction."
Work Restrictions
Documented work restrictions — from treating physicians, from Functional Capacity Evaluations, from occupational medicine consultants — provide an objective, third-party record of functional limitation that carries particular weight with juries because it represents an independent professional's assessment of what the plaintiff cannot safely do. In personal injury cases, work restrictions also intersect with the economic damages analysis and, where applicable, the vocational rehabilitation analysis. The pain management expert contributes to this picture by documenting the clinical basis for the restrictions: why the medical findings support the specific restrictions imposed, and why those restrictions are expected to be permanent rather than temporary.
Functional Capacity Evaluation
A Functional Capacity Evaluation (FCE) is a systematic, standardized assessment of a claimant's physical functional abilities, typically administered by a licensed physical or occupational therapist over one or two full days using objective performance tests. Unlike physician-administered ROM measurements — which capture range at a single examination — the FCE evaluates sustained functional performance across dozens of standardized tasks: lift capacity (floor-to-waist, waist-to-shoulder, overhead), carrying distance and weight tolerance, push and pull force, positional tolerances (sustained sitting, standing, walking, kneeling, crouching), and fine motor performance. Critically, the evaluator documents effort consistency and performance variability across repeated trials, providing an independent behavioral assessment of whether the claimant's observed performance is consistent with genuine physical limitation.
In litigation, the FCE's primary value is its objectivity relative to self-report instruments. A claimant who scores a PDI of 60 and an ODI of 65% may face a credibility challenge from a defense expert who argues those figures reflect symptom amplification. An FCE that independently documents the same functional limitation through observed, timed, and measured task performance provides corroborating third-party evidence that is substantially more difficult to attack. When the FCE evaluator documents consistent effort across repeated trials — a finding that supports genuine rather than volitional limitation — and when those results are consistent with the pain management examination findings and the treating record, the convergence of three independent sources is compelling clinical evidence under Gregory v. Chohan's rational connection standard. The pain management physician integrates FCE findings into the clinical opinion by explicitly correlating the measured functional limits with the diagnosed condition, the objective examination findings, and the imaging — building the specific, evidence-grounded picture that supports a defensible non-economic damages award.
Sleep Disturbance
Sleep disturbance is among the most consistently reported and most consistently documented functional consequences of chronic pain, and it is frequently underweighted in pain and suffering presentations. The longitudinal treating record of a plaintiff with severe chronic pain typically contains dozens of documented sleep complaints — inability to find a comfortable position, inability to maintain sleep due to pain, daytime fatigue from disrupted nighttime rest. PROMIS Sleep Disturbance scores can quantify this against population norms. The physician expert can explain the clinical mechanism linking the documented pain condition to sleep disruption — nociceptive activation during positional changes, sympathetic arousal preventing deep sleep, the central sensitization mechanisms that maintain heightened pain sensitivity during sleep — providing a clinical basis for what otherwise might sound like a subjective complaint.
Recreation and Lifestyle Changes
Loss of recreational activities and lifestyle changes are the substance of loss-of-enjoyment-of-life damages, and they are most compelling when they are clinically grounded. A plaintiff who was documented before the incident as an active runner, a weekend golfer, or a hands-on parent who played with their children on the floor, and who has a longitudinal treating record documenting persistent severe pain and functional limitations clinically inconsistent with those activities, has a clinically grounded loss-of-enjoyment claim. The physician expert's role is to make the clinical connection explicit: the documented range of motion restriction, the documented weight-bearing limitation, the documented kneeling and squatting restriction — these are clinically consistent with an inability to continue the documented prior activities, and the consistency of the documented clinical findings over time supports the permanence of the loss.
Future Medical Care and Pain Damages
Future medical care projections are structurally connected to the non-economic damages analysis in ways that are frequently underutilized in trial preparation. The same clinical opinion that projects indefinite interventional treatment, spinal cord stimulation management, or chronic medication management is also — implicitly — a physician's opinion that the plaintiff's condition is severe, chronic, and unresponsive to less intensive treatment. That opinion is relevant not only to the economic damages calculation but to the jury's assessment of the plaintiff's future pain and suffering.
A comprehensive future medical care projection for a plaintiff with severe chronic radiculopathy, projected to require ongoing epidural steroid injections, radiofrequency ablation cycles, and eventual spinal cord stimulation, documents a physician's clinical opinion that this plaintiff is not going to get better — that the condition is expected to persist, to require escalating intervention, and to impose an ongoing treatment burden that extends through the plaintiff's life expectancy. That is simultaneously an economic damages opinion and evidence of future pain and suffering that is substantially more durable than a general prediction that "the plaintiff will always be in pain."
For conditions requiring high-cost interventions — SCS, intrathecal pump therapy — the future care projection also provides implicit corroboration of the medical necessity of the treatment, since a physician who projects these interventions must be able to defend their medical necessity on cross-examination. The integration of the future care projection with the pain and suffering opinion — presented through the same pain management expert — creates a cohesive clinical picture that is significantly stronger than presenting them as independent, unconnected opinions.
Plaintiff and Defense Perspectives
Plaintiff Strategy
Plaintiff attorneys building a non-economic damages case after Gregory v. Chohan should structure the pain management expert's engagement around three objectives: establishing the objective clinical foundation for the pain and suffering claimed, quantifying the functional impairment through validated instruments and clinical documentation, and connecting the clinical picture to the specific activities and life experiences that constitute the non-economic harm.
The expert should be retained early enough to review the complete treating record before the independent examination, identify any gaps in the treating record's functional documentation, and potentially recommend supplemental assessments — PROMIS administration, Functional Capacity Evaluation — that can strengthen the clinical foundation before summary judgment or mediation. The expert opinion should address not just what the plaintiff has but what that means for their daily life — in specific, clinical terms that the jury can understand and the appellate court can review as a rational evidentiary basis for the award.
Closing argument should build directly on the expert's clinical framework: the jury should be able to identify specific clinical findings — the documented range of motion measurements, the disability scale scores, the FCE results, the treatment record — as the basis for the damages figure being suggested, mapped to the specific PTJC categories at issue. This is what transforms a sympathetic closing argument into a Gregory v. Chohan-compliant damages presentation.
Defense Strategy
Defense attorneys should engage a pain management expert to evaluate three dimensions of the plaintiff's pain and suffering presentation. First, the clinical validity of the diagnosis — are the objective findings in the treating record consistent with the claimed diagnosis, or are there inconsistencies suggesting exaggeration or a condition that is attributable to pre-existing disease rather than the incident? Second, the functional impairment evidence — are the disability scale scores and FCE results consistent with the clinical findings, and are there records in the plaintiff's own treating history that are inconsistent with the claimed functional limitation level? Third, the future care foundation — does the future care projection rest on a defensible standard of care and medical necessity analysis, or does it project treatment that exceeds what the documented condition supports?
Defense counsel can also use Gregory v. Chohan proactively: if the plaintiff's expert has not provided a structured, instrument-based, clinically grounded functional impairment analysis — relying instead on subjective self-report and narrative — that gap in the plaintiff's evidentiary architecture is an argument for remittitur or reversal if a large non-economic verdict is returned. Identifying this gap before trial allows defense counsel to challenge the sufficiency of the plaintiff's expert's methodology and to request appropriate jury instructions.
Rebuttal Methodology
Effective rebuttal of an opposing pain and suffering expert requires engaging the specific clinical arguments, not simply reasserting a different conclusion. Where the opposing expert identified specific examination findings, the rebuttal must address whether those findings were documented or overinterpreted. Where validated instruments were used, the rebuttal must address whether the administration and interpretation were appropriate, whether pre-existing functional limitation was adequately accounted for, and whether the results are consistent with other clinical data in the record. Where the opposing expert attributed functional limitation to the incident, the rebuttal must engage the causation analysis to identify what portion of the documented limitation is incident-attributable versus pre-existing or natural history. Rebuttal that simply asserts "the plaintiff is not as disabled as claimed" without engaging the clinical methodology of the opposing opinion is less effective than rebuttal that systematically identifies the specific clinical analysis errors.
Common Mistakes Attorneys Make in Pain and Suffering Cases
Relying Solely on Pain Scores
Presenting a series of 10/10 pain scores from treating records as the primary evidence of pain severity is the most common and most correctable error in pain and suffering damages preparation. Pain scores are unidimensional, self-reported, and subject to ceiling effects in litigation-adjacent medical care. Under Gregory v. Chohan, a damages award resting on a series of numerical self-reports without clinical corroboration is exposed to challenge. The solution is not to exclude the pain scores — they are part of the longitudinal record — but to embed them in a multi-dimensional clinical framework that includes validated functional instruments, examination findings, and the physician expert's clinical interpretation of what the documented trajectory means.
Ignoring Functional Impairment
A non-economic damages case that presents clinical diagnosis and pain scores but does not systematically quantify what the plaintiff can no longer do misses the most persuasive and legally durable form of evidence available. Functional impairment documentation — through PDI, ODI, PROMIS, or Functional Capacity Evaluation — converts the abstract claim of suffering into a specific, clinically grounded picture of daily life alteration. Juries understand what it means to be unable to lift their children, to sleep through the night, or to perform the yard work they did every weekend before the accident. A pain management expert who connects the clinical findings to those specific functional losses provides the jury with a rational basis for a specific damages award.
Failing to Correlate Imaging with Clinical Findings
The failure to systematically correlate imaging findings with clinical examination findings — and to explain what the imaging does and does not evaluate for conditions where imaging is expected to be normal — leaves the damages case vulnerable to the "normal MRI" argument. Defense experts will raise it. The plaintiff's pain management expert should preemptively address the imaging findings by explaining their relationship to the clinical picture: what the imaging confirms, what it does not evaluate, and why the examination findings and functional documentation are the appropriate evidentiary basis for conditions that are clinically rather than structurally diagnosed.
Unsupported Damages Anchors
As Gregory v. Chohan made explicit, a closing argument figure that is not tethered to specific clinical evidence creates appellate risk. Anchors are not prohibited — but they should be constructed from and supported by the clinical record. The damages figure proposed should be something the attorney can connect, in specific terms, to the documented clinical findings: "Dr. [Expert] documented X, Y, and Z findings that are consistent with the plaintiff's reported limitations; the treating record spanning [timeframe] documents consistent evidence of this level of impairment; and the validated instrument scores place her in the severe disability range. On that evidence, we ask you to award [figure]." That structure is what transforms an anchor from an appellate target into a rational evidentiary-based damages presentation.
Inadequate Future Care Foundation
A future medical care projection that cannot survive cross-examination — because it projects procedures without a medical necessity foundation, applies incorrect cost data, or exceeds published guideline frequency parameters — undermines not just the economic damages but the non-economic damages architecture as well. A defense expert who dismantles the plaintiff's future care projection at trial also implicitly argues that the plaintiff's condition is less severe than claimed. The future care projection and the pain and suffering evidence should be built from the same clinical foundation by the same expert, so that the treatment projected and the suffering claimed are clinically consistent with and mutually reinforcing of each other.
Conclusion
Gregory v. Chohan changed the evidentiary requirements for non-economic damages in Texas personal injury cases, but it did not make those damages harder to recover — it made them harder to improvise. The rational connection requirement rewards preparation: the attorney who builds an objective, clinically grounded damages architecture before trial has a case that survives appellate review; the attorney who relies on closing argument and client testimony alone has a verdict that is increasingly vulnerable to remittitur or reversal.
Pain management expert testimony provides exactly what the rational connection standard requires. Quantitative examination findings, validated disability instrument scores, Functional Capacity Evaluation results, longitudinal records review, symptom validity analysis, and an integrated future medical care projection collectively create a clinical picture that is specific, evidence-grounded, and defensible on cross-examination. The jury's award is no longer an unconstrained emotional response to the plaintiff's suffering — it is a reasoned assessment of documented, clinically characterized harm, mapped to the specific PTJC elements the jury is asked to value.
For plaintiff attorneys, the practical message is to retain a pain management expert early — not only for trial preparation but for case valuation, mediation strategy, and identifying gaps in the treating record's functional documentation while there is still time to address them. For defense attorneys, the same analytical framework that supports plaintiff damages is equally effective at identifying overstated projections, inconsistent functional documentation, and claims that exceed what the objective record supports.
The difference between a non-economic damages case that survives appeal and one that does not is almost always in the quality of the clinical evidence assembled before trial. Contact Expert Medical Services LLC to discuss how a structured pain management expert opinion can provide the evidentiary foundation your case requires.