Psychological Assessment and Treatment of Pain
A GRID-Referenced Framework
Mentor Research Institute (2026)
Understanding Pain
Pain is an unpleasant sensory and emotional experience associated with, or resembling that associated with, actual or potential tissue damage. Pain is personal and may be influenced by biological functioning, prior experiences, cognition, emotion, attention, behavior, relationships, culture, sleep, environmental demands, and perceived control.
Psychological involvement does not mean that pain is imagined, exaggerated, or solely psychological. Psychological treatment is appropriate because pain affects—and is affected by—emotion, cognition, behavior, learning, relationships, and functioning.
Pain Classified by Duration
Acute pain
Acute pain commonly occurs after an injury, illness, medical procedure, or surgery. It generally lasts for a limited period and may improve as the underlying condition heals.
Psychological intervention may be appropriate when acute pain is associated with:
Severe anxiety or panic;
Fear of movement or medical procedures;
Acute stress reactions;
Sleep disruption;
Difficulty following medical recommendations;
Excessive avoidance;
Catastrophic thinking; or
Risk of developing persistent pain-related disability.
Subacute pain
Subacute pain continues beyond the immediate acute phase but has not yet become chronic. This period may present an important opportunity to prevent fear, avoidance, inactivity, sleep disruption, depression, and functional decline from becoming established patterns.
Chronic pain
Chronic pain persists or recurs for longer than three months or beyond the expected period of healing. Chronic pain may continue even when the original injury has healed or when observable medical findings do not fully explain the patient’s current level of distress or impairment.
The goals of psychological treatment may include reducing distress, increasing coping, improving sleep, restoring activity, improving relationships, increasing self-efficacy, and reducing functional impairment. Complete elimination of pain is not required for treatment to produce meaningful benefit.
Pain Classified by Clinical Mechanism
Nociceptive pain
Nociceptive pain arises from actual or threatened injury to non-neural tissue. It may occur with inflammation, arthritis, fractures, burns, surgery, or musculoskeletal injury.
Psychological treatment may address fear, anxiety, sleep disruption, reduced activity, coping, adherence, and adjustment to temporary or permanent limitations.
Neuropathic pain
Neuropathic pain results from a lesion or disease affecting the somatosensory nervous system. Patients may describe burning, shooting, electric, tingling, stabbing, or numb sensations.
Examples include diabetic neuropathy, postherpetic neuralgia, radiculopathy, nerve injury, and some postoperative pain conditions.
Psychological treatment may address distress, hypervigilance, sleep disturbance, activity restriction, hopelessness, and adaptation to persistent symptoms.
Nociplastic pain
Nociplastic pain involves altered nociception when tissue damage or a specific neurological lesion does not adequately explain the pain presentation. It may be widespread or persistent and may occur with fatigue, sleep disturbance, cognitive complaints, sensory sensitivity, and emotional distress.
Examples may include fibromyalgia and some presentations of persistent musculoskeletal pain.
Mixed pain
Many patients have more than one pain mechanism. A patient may simultaneously experience tissue injury, nerve involvement, altered pain processing, anxiety, depression, sleep disruption, and fear-based avoidance.
The psychologist should not attempt to determine the medical mechanism of pain without appropriate training and evidence. Pain-mechanism classifications provide context for interdisciplinary care rather than replacing medical assessment.
The Role of the Psychologist
Psychologists generally do not treat the structural medical cause of pain. They assess and treat the cognitive, emotional, behavioral, interpersonal, and functional dimensions of the patient’s condition.
Appropriate psychological treatment targets may include:
Anxiety about pain
Depressed mood
Irritability
Hopelessness
Fear of movement, injury, or reinjury
Catastrophic interpretations
Hypervigilance to bodily sensations
Sleep disturbance
Fatigue-related behavior
Loss of motivation
Activity avoidance
Excessive rest
Inconsistent activity
Overactivity followed by exhaustion
Difficulty adhering to rehabilitation
Social withdrawal
Family or relationship conflict
Trauma related to injury or medical treatment
Grief associated with loss of health or independence
Medication-related anxiety
Risky medication or substance-use behavior
Reduced self-efficacy
Difficulty accepting permanent limitations, and
Impairment in work, self-care, relationships, recreation, or other meaningful activities.
The GRID as a Pain-Management Reference
The GRID is a structured clinical documentation and decision-support framework. It provides a transparent set of requirements for assessment, identification of clinical problems, treatment planning, intervention selection, progress monitoring, and chart documentation.
The GRID is not a single treatment method and does not replace clinical judgment. It provides a reference for determining:
What should be assessed
Which symptoms and functional problems should be documented
Which interventions are available
Which interventions may be required
Which interventions are clinically appropriate when not required
What evidence should appear in the chart note
How the patient responded, and
Whether treatment is producing meaningful progress
Depending on the service, diagnosis, payer, contract, professional standard, or practice policy, a GRID element may be:
Required for billing
Contractually required
Ethically or professionally required
Required by the treatment plan
Required because of risk
Clinically appropriate when relevant or
Optional based on clinical judgment.
This transparency allows clinicians to distinguish mandatory documentation from information that should be documented because it is relevant to the patient’s care.
5. GRID-Referenced Pain Assessment
A pain assessment should not be limited to asking the patient to rate pain intensity. The psychologist should assess the relationship among pain, behavioral symptoms, mental health symptoms, functional problems, environmental demands, and coping behavior.
A. Pain presentation
The chart may document:
Location of pain
Duration
Frequency
Typical intensity
Highest intensity
Variability
Known medical condition
Precipitating event
Aggravating factors
Relieving factors
Medical evaluation completed
Current treatment, and
Relevant healthcare providers.
B. Behavioral and mental health symptoms
Assessment may include:
Anxiety
Depressed mood
Irritability
Fear
Panic
Catastrophic thinking
Hopelessness
Sleep disturbance
Impaired concentration
Hypervigilance
Avoidance
Reduced motivation
Social withdrawal
Trauma symptoms
Substance-use concerns, and
Suicidal ideation.
C. Functional problems
The psychologist should identify how pain interferes with daily life. Functional problems may include difficulty with:
Self-care
Walking or mobility
Sitting or standing
Sleep
Household responsibilities
Employment
School
Parenting
Caregiving
Transportation
Medical adherence
Exercise
Recreation
Social participation
Intimate relationships, and
Independent living.
D. Behavioral patterns
The clinician may assess:
Avoiding activity because of fear
Excessive resting
Alternating overactivity and collapse
Repeatedly checking pain
Seeking excessive reassurance
Withdrawing from valued activity
Inconsistent rehabilitation participation
Using alcohol or other substances to cope
Conflict with family members about pain
Medication misuse, and
Difficulty communicating with healthcare providers.
E. Strengths and protective factors
Assessment should also identify:
Motivation for treatment
Existing coping skills
Family or social support
Meaningful activities
Treatment adherence
Insight
Problem-solving ability
Willingness to practice skills, and
Access to medical care.
GRID-Referenced Treatment Planning
The treatment plan should connect the assessment findings to individualized goals, measurable objectives, and appropriate interventions.
A treatment plan may identify:
Problem
Pain-related fear and avoidance have reduced walking, recreation, and social participation.
Goal
Increase safe and medically appropriate participation in daily and valued activities.
Objectives
Identify feared activities
Develop a graded activity hierarchy
Practice pacing
Increase walking according to the agreed plan
Reduce avoidance
Monitor functional interference and
Resume one meaningful social or recreational activity.
Interventions
Pain education
Cognitive restructuring
Activity pacing
Graded exposure
Behavioral activation
Relaxation training, and
Progress monitoring.
The GRID helps demonstrate the logical relationship among the identified problem, treatment goal, intervention, patient response, and outcome.
Psychological Interventions for Pain
Pain education
Explain how biological, psychological, behavioral, interpersonal, and environmental factors interact. Education should validate the pain experience and help the patient understand that psychological treatment addresses pain-related distress and functioning rather than suggesting that the pain is unreal.
Expected chart documentation:
Information provided
Patient’s understanding
Misconceptions addressed
Relationship to treatment goals, and
Planned application.
Cognitive restructuring
Identify catastrophic interpretations, helplessness, all-or-nothing beliefs, and assumptions that pain always signals additional damage.
Expected chart documentation:
Belief or interpretation addressed
Evidence reviewed
Alternative perspective developed
Patient response, and
Planned practice.
Behavioral activation
Support gradual reengagement in meaningful, pleasurable, social, occupational, and self-care activities.
Expected chart documentation:
Avoided or reduced activities
Activity selected
Barriers addressed
Behavioral plan, and
Completion or response.
Activity pacing
Teach the patient to balance activity and recovery rather than alternating between excessive activity and prolonged inactivity.
Expected chart documentation:
Current activity pattern
Pacing strategy
Planned activity and rest periods
Patient understanding, and
Follow-up results.
Graded exposure
Develop a hierarchy of feared but medically permissible movements or activities and gradually increase participation.
Expected chart documentation:
Feared activity
Anticipated consequence
Medical limitations considered
Exposure completed or planned
Distress or confidence rating, and
Outcome.
Relaxation and physiological regulation
Interventions may include diaphragmatic breathing, progressive muscle relaxation, guided imagery, grounding, or biofeedback when available.
Expected chart documentation:
Skill taught
Practice completed
Patient’s response
Barriers, and
Home practice.
Mindfulness-based intervention
Teach the patient to observe pain, thoughts, emotions, and urges without automatically reacting through avoidance, struggle, or alarm.
Expected chart documentation:
Mindfulness skill
Duration of practice
Patient response
Application to pain, and
Practice plan.
Acceptance-based intervention
Help the patient reduce unproductive struggle with unavoidable experiences and increase behavior consistent with personal values.
Expected chart documentation:
Avoidance pattern
Value identified
Willingness or acceptance exercise
Committed action, and
Response.
Sleep intervention
Address irregular schedules, pain-related sleep anxiety, excessive time in bed, conditioned wakefulness, and behaviors that interfere with sleep.
Expected chart documentation:
Sleep problem
Maintaining factors
Intervention selected
Sleep behavior assigned, and
Progress.
Problem-solving Training
Help the patient define a problem, generate options, evaluate consequences, select an action, and review the outcome.
Possible targets include work accommodations, household responsibilities, transportation, healthcare communication, or family expectations.
Motivational interviewing
Explore ambivalence concerning rehabilitation, exercise, medication-related behavior, substance use, medical procedures, or behavioral recommendations.
Interpersonal or family intervention
Address role changes, overprotection, invalidation, caregiver fatigue, conflict, communication, intimacy, and shared responsibility.
Coping-skills and flare planning
Develop strategies for predictable increases in pain without abandoning treatment goals or automatically escalating avoidance.
A flare plan may identify:
Early warning signs
Coping responses
Temporary activity modifications
Relaxation strategies
Appropriate healthcare contacts, and
Emergency indicators.
Required and Clinically Appropriate Interventions
The GRID permits interventions to be identified as required when they are necessary because of:
Immediate risk;
A documented treatment-plan objective;
A contractual requirement;
A billing requirement;
A professional standard;
A practice policy; or
A condition of coordinated care.
An intervention may be clinically appropriate without being formally required. For example, relaxation training may not be mandatory, but it may be appropriate when the patient experiences muscle tension and autonomic arousal. Family intervention may not be required, but it may be appropriate when conflict or overprotection contributes to disability.
The chart should document why the intervention was selected and how it relates to the patient’s symptoms, functional problems, goals, or risks.
Generic Pain-Related Symptom Checklist
Instructions: Rate each symptom based on the past seven days.
ScoreDescription1Not present2–3Mild4–5Noticeable6–7Moderate to substantial8–9Severe10Extreme or nearly constant
Overall pain intensity: ___
Pain-related physical tension: ___
Burning, tingling, shooting, or numb sensations: ___
Fatigue or exhaustion: ___
Sleep disturbance: ___
Difficulty concentrating: ___
Anxiety about pain: ___
Fear of movement or reinjury: ___
Irritability or frustration: ___
Sadness or discouragement: ___
Hopelessness about improvement: ___
Difficulty relaxing: ___
Catastrophic thoughts about pain: ___
Feeling unable to manage pain: ___
Urges to avoid activity: ___
Total symptom-burden score: ___ / 150
This checklist is a generic clinical monitoring instrument. It is not represented as a standardized diagnostic measure. Its principal purpose is to compare the patient’s current ratings with the patient’s own baseline and prior ratings.
Generic Functional Problems Checklist
Instructions: Rate how much pain or pain-related distress interfered with each area during the past seven days.
ScoreDescription1No interference2–3Mild interference4–5Noticeable interference6–7Substantial interference8–9Severe interference10Unable to perform or participate
Getting out of bed and beginning the day: ___
Bathing, dressing, or grooming: ___
Walking or moving around: ___
Sitting or standing: ___
Lifting, carrying, reaching, or bending: ___
Completing household responsibilities: ___
Shopping, preparing meals, or completing errands: ___
Working or studying: ___
Concentrating and completing tasks: ___
Exercising or participating in rehabilitation: ___
Sleeping and maintaining a regular schedule: ___
Participating in hobbies or recreation: ___
Spending time with friends or family: ___
Participating in intimate relationships: ___
Managing emotions and stress: ___
Attending appointments or following treatment recommendations: ___
Driving or using transportation: ___
Performing parenting or caregiving responsibilities: ___
Maintaining independence: ___
Participating in personally meaningful activities: ___
Total functional-interference score: ___ / 200
Number of functional problems rated 4 or higher: ___
Three priority functional problems:
Measuring Progress
Pain intensity should not be the only outcome. Treatment may be effective when pain remains present but the patient demonstrates improved sleep, mobility, coping, emotional regulation, work participation, relationship functioning, or meaningful activity.
GRID-referenced progress indicators may include:
Change in symptom-burden score;
Change in functional-interference score;
Number of symptoms;
Number of functional problems;
Reduction in avoidance;
Increased participation in valued activity;
Improved sleep;
Completion of graded activity;
Improved adherence;
Increased coping confidence;
Reduced emotional distress; and
Progress toward individualized goals.
Percentage Change
Percentage improvement =
(Baseline score − Current score) ÷ Baseline score × 100
A reduction from 100 to 75 represents a 25% improvement in the measured burden. The score should be interpreted with clinical context rather than treated as proof of recovery.
GRID-Referenced Chart Note
A pain-management chart note should generally document:
The symptoms and functional problems addressed;
Relevant changes since the prior encounter;
The intervention provided;
Why the intervention was appropriate;
The patient’s participation and response;
Progress toward treatment goals;
Any outcome scores used;
Risk or safety concerns;
Coordination with other providers when relevant; and
The plan for continued treatment.
Example
The patient reported continuing pain-related anxiety, sleep disruption, and avoidance of walking outside the home. The pain-related symptom score decreased from 82 at baseline to 70. Functional interference decreased from 108 to 88, with continuing difficulty in sleep, household responsibilities, and recreation.
The clinician provided pain education, cognitive restructuring, and activity-pacing instruction. The patient identified the belief that increased discomfort during walking necessarily meant additional physical damage. The clinician helped the patient develop a more medically consistent interpretation and a graded walking plan. The patient demonstrated understanding, practiced paced breathing, and agreed to complete two brief walks before the next session.
The treatment plan remains focused on reducing fear-based avoidance, improving sleep, and increasing safe participation in valued activities.
Clinical Boundaries and Referral
Psychological treatment should complement appropriate medical assessment. The psychologist should refer for medical evaluation when pain is new, unexplained, rapidly worsening, or accompanied by concerning physical symptoms.
Urgent medical evaluation may be necessary when pain occurs with:
New paralysis or substantial weakness;
Loss of bowel or bladder control;
Chest pain;
Difficulty breathing;
Sudden severe headache;
Altered consciousness;
Fever or signs of infection;
Major trauma;
Suspected overdose;
Severe withdrawal; or
Other indications of an acute medical emergency.
Behavioral health risk assessment is required when the patient reports suicidal ideation, self-harm, dangerous substance use, medication misuse, or other significant safety concerns.
Conclusion
Psychological pain treatment addresses the interaction among pain, emotional distress, cognition, behavior, relationships, and daily functioning. The GRID provides a transparent structure for determining what should be assessed, what problems should be included in the treatment plan, which interventions are required or clinically appropriate, what should be documented in the chart note, and how progress should be evaluated.
The central documentation sequence is:
Assessment finding → identified symptom or functional problem → treatment goal → intervention → patient response → measurable progress → continued or modified plan
This structure helps demonstrate that psychological pain-management services are clinically appropriate, connected to the patient’s needs, adequately documented, and evaluated through meaningful symptom and functional outcomes.