Pain Assessment

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Module Overview

Subjective Assessment

Objective Examination

Clinical Reasoning

Irritability & Sensitivity

Red Flags & Screening

Impact-Centred Assessment

many questions exist — but they come down to one purpose:

Understand the person
not just the pain

the assessment framework operates across three domains:

  1. Information — clinical history, symptom characteristics, progression
  2. Indicators — contextual factors that shape presentation and rehabilitation
  3. Impact — the effect of pain on function, beliefs, and quality of life

not a checklist of symptoms
a structured clinical conversation

the assessment is the foundation of all treatment decisions
and the beginning of the therapeutic relationship

Learning Objectives

Upon completion of this module, clinicians will be able to:

  • Identify the three core domains of pain assessment: Information, Indicators, and Impact
  • Explain the limitations of unidimensional pain scales and describe more clinically meaningful alternatives
  • Distinguish between subjective and objective components of a pain assessment and articulate the purpose of each
  • Define irritability and sensitivity in the clinical context and apply these concepts to guide examination decisions
  • Recognise presentations that require screening for serious pathology (red flags) and apply appropriate referral reasoning
  • Formulate a working clinical hypothesis from assessment findings and use it to direct treatment planning
  • Describe the role of communication and the therapeutic relationship in the assessment process

prerequisite knowledge:

  • Foundational understanding of pain neuroscience
  • Basic musculoskeletal anatomy
  • Introductory clinical communication skills

Introduction

the standard pain assessment

commonly taught pain questions:

  • Where is it?
  • What does it feel like?
  • When do you feel it?
  • How long does it last?
  • What makes it worse?
  • What makes it better?
  • Are there any red flag symptoms?

these questions are necessary
they are not sufficient

assessment is not symptom collection
it is clinical understanding

what standard questions miss:

  • the meaning the person attaches to their pain
  • the functional and occupational impact
  • beliefs, fears, and expectations
  • contextual and psychosocial influences
  • what the person actually needs from this encounter

a thorough assessment reduces clinical uncertainty
directs examination efficiently
and begins the process of therapeutic change

The Three Domains

why do we assess? what is the goal?

Information

  • Timeline
  • Mechanism
  • Symptoms
  • Progression
  • Irritability
  • Severity
  • Warning signs

Indicators

  • Previous treatment
  • Investigations
  • Medical history
  • Medication
  • Occupation
  • Activity
  • Work / life context

Impact

  • Concerns
  • Beliefs
  • Suffering
  • Attitudes
  • Understanding
  • Goals
  • Motivators

Information provides the clinical picture — history, symptom behaviour, and warning signs.
It is gathered through both verbal report and non-verbal observation.

Indicators provide contextual depth — prior treatment responses, lifestyle factors, and systemic influences that shape current presentation and rehabilitation direction.

Impact is the most clinically significant domain.

Understanding what the pain means to the person, how it has changed their life, and what they hope to achieve provides the foundation for patient-centred care.

This is where treatment goals are anchored and therapeutic alliance is built.

the quality of assessment determines the quality of treatment

Pain Rating Scales

utility and limitations

the numeric pain rating scale (NRS):

  • 0 = no pain; 10 = worst pain imaginable
  • widely used, quick to administer
  • useful for tracking change over time within the same patient
a single number is a model of reality
with significant gaps

what the NRS cannot capture:

  • functional capacity at a given pain level
  • the personal and contextual meaning of that number
  • the impact on daily activity, work, and relationships
  • the patient's beliefs about what that number means for recovery

two patients reporting 8/10 may present entirely differently:
one severely limited; one continuing full activity
the number alone does not determine clinical significance

clinical principle:

Pain intensity rating is a data point, not a diagnosis.
Always seek to understand the impact behind the number —
what the pain prevents, limits, or changes for that individual.

use the scale if clinically indicated
do not allow it to substitute for a thorough assessment of function and meaning

Subjective Assessment

gathering information through structured conversation

the subjective assessment is the primary source of clinical information
it begins before the patient enters the treatment room

observation prior to formal assessment:

  • posture in the waiting area
  • gait and movement quality on approach
  • facial expression and affect
  • non-verbal indicators of distress or avoidance

this information informs how you open the assessment and how you manage the physical environment

open with narrative — not a questionnaire

effective opening prompts:

  • "Tell me what has happened."
  • "Tell me the story."
  • "Where would you like to start?"

Allowing patients to narrate their experience communicates that their perspective is valued and clinically relevant.

for patients with longstanding pain:

  • acknowledge the full history is important
  • do not truncate or redirect prematurely
  • the length of their story reflects the depth of the problem

accommodate physical comfort from the outset
a patient in severe pain cannot provide a reliable history
if they are positioned in a way that provokes symptoms

Subjective Assessment

key content areas

symptom characteristics:

  • Location — primary, referred, and radiating areas
  • Quality — descriptor terms (sharp, dull, burning, aching)
  • Behaviour — constant vs. intermittent; aggravating and easing factors
  • Onset and duration — acute, subacute, or chronic
  • Progression — improving, stable, or deteriorating

contextual indicators:

  • Previous episodes and treatment responses
  • Investigations undertaken and results communicated
  • Current and recent medications
  • Relevant medical and surgical history
  • Occupational demands and activity levels
  • Work and life stressors

impact indicators — do not omit:

  • What is the patient most concerned about?
  • What do they believe is causing or maintaining the pain?
  • What has pain prevented them from doing?
  • What are their goals for treatment?
  • What motivates them to engage in rehabilitation?

knowing where to start is significantly easier when impact is understood

Objective Examination

hypothesis-driven physical assessment

the objective examination does not begin without a working hypothesis
the subjective assessment should have generated one — or several

purpose of the objective examination:

  • Source additional information to compare against the subjective assessment
  • Confirm or contradict working hypotheses
  • Determine where treatment should begin
  • Establish baseline measures for reassessment
examine what the patient has already told you

four key clinical questions to guide objective assessment:

  • Red flags: Is there a presentation inconsistent with musculoskeletal injury that warrants urgent investigation?
  • Structural integrity: Is there evidence of compromise requiring referral or modified loading?
  • Irritability: How much can this presentation tolerate before symptoms escalate?
  • Sensitivity: How reactive is the system? What does this indicate for treatment selection?

not every test is required for every presentation
clinical reasoning — not habit — determines what is assessed

patients form judgements about assessment quality based on how they feel during the encounter.
A thorough, thoughtful examination — including physical handling of the relevant area — communicates clinical competence and builds therapeutic trust.

Red Flags and Screening

identifying presentations outside musculoskeletal scope

a musculoskeletal presentation
should behave like a musculoskeletal presentation

expected features of musculoskeletal pain:

  • Symptoms that are influenced by position, movement, or load
  • Clear aggravating and easing factors
  • Consistent with known anatomy and mechanism
  • Variable behaviour — not constant, unremitting, or progressive without mechanical explanation

features that require further investigation:

  • Unexplained, significant night pain not relieved by position change
  • Systemic symptoms — fever, unexplained weight loss, fatigue
  • Progressive neurological deficit
  • Bilateral upper or lower limb neurological signs
  • Marked swelling disproportionate to mechanism
  • Pain behaviour inconsistent with the reported injury
  • History of malignancy

musculoskeletal presentations can be highly variable, irritable, and painful
they should nonetheless present with a pattern consistent with the tissue involved

clinical principle:

When a presentation does not conform to expected musculoskeletal behaviour, it warrants medical screening or referral. Clinical uncertainty is not a reason to proceed with treatment — it is a reason to seek further information.

developing pattern recognition for atypical presentations takes clinical experience
early-career clinicians should establish trusted referral pathways for uncertain cases

Irritability

assessing the tolerance of the presentation

irritability describes how readily symptoms are provoked and how quickly they settle following provocation

assessing irritability:

  • What activities or movements bring on symptoms?
  • How much of that activity is required to provoke symptoms?
  • How long do symptoms take to settle once provoked?
  • What is the severity of symptoms at their worst?

high irritability presentation:

  • Symptoms provoked by minimal activity or handling
  • Prolonged or disproportionate symptom escalation post-provocation
  • Severe pain that is difficult to settle

clinical implication: limit examination to essential tests; avoid unnecessary provocation; manage patient expectations about post-session symptom behaviour

low irritability presentation:

  • Symptoms require sustained or repeated loading to provoke
  • Symptoms settle quickly following rest or cessation of activity
  • Manageable pain intensity

clinical implication: broader examination tolerated; progressive loading viable; more comprehensive objective assessment appropriate

prepare the patient
give control
avoid unnecessary suffering

when a high-irritability presentation is anticipated, communicate this directly
provide the patient with clear instructions for self-management
and ensure access to clinical support if symptoms escalate post-session

Sensitivity

assessing system reactivity and potential for change

sensitivity refers to the degree of neural and central sensitisation present in a presentation
it differs from irritability in that it reflects the underlying state of the pain system,
not merely the mechanical tolerance of local tissue

features associated with central sensitisation:

  • Pain disproportionate to tissue findings or mechanism
  • Widespread or spreading pain distribution
  • Heightened response to stimuli that would not ordinarily be painful (allodynia)
  • Significant pain with minimal provocation
  • Strong association with sleep disruption, stress, and mood
  • Multiple previous treatments with limited or short-term effect

clinical significance:

High sensitivity indicates that local tissue-directed treatments are unlikely to be sufficient alone. Treatment must address the broader system — including education, graded exposure, lifestyle factors, and psychosocial contributors.

sensitivity informs treatment selection
not just examination approach

sensitivity assessment informs:

  • Potential for change — is this system modifiable?
  • Treatment selection — what is most likely to produce meaningful improvement?
  • Clinical reasoning — which hypothesis best explains the presentation?
  • Realistic goal-setting — what outcomes are achievable, and over what timeframe?

sensitivity is assessed through thorough clinical reasoning
not a single test or tool

Clinical Reasoning

from assessment to hypothesis to intervention

the purpose of the assessment is to generate a working clinical hypothesis
this hypothesis — not a definitive diagnosis — guides where treatment begins

the clinical hypothesis addresses:

  • What is the most likely source or driver of this presentation?
  • What are the maintaining factors?
  • What are the barriers to recovery?
  • What does this person need most from this encounter?
  • Where is the most appropriate point of intervention?
the goal is not a solution on day one
the goal is a credible starting point

common clinical reasoning categories:

  • Potential serious pathology: requires urgent screening or referral; cannot proceed without investigation
  • Structural or tissue-based presentation: clear mechanical driver; amenable to local tissue intervention
  • Irritable / inflammatory presentation: active tissue irritation; requires management before loading
  • Complex or sensitised presentation: multiple contributing factors; requires multi-modal, patient-centred approach

a hypothesis must be:

  • Consistent with the subjective and objective findings
  • Clearly communicated to the patient in accessible language
  • Revisable — new information should update the hypothesis
  • Linked directly to the proposed treatment direction

clinical reasoning is an iterative process
the assessment does not end at the first session

Communication in Assessment

the therapeutic relationship begins at first contact

assessment is not a neutral information-gathering exercise
how an assessment is conducted shapes the patient's beliefs, expectations, and engagement

communication errors with clinical consequence:

  • Using pathology-focused language that amplifies fear or catastrophising
  • Providing complex, theoretical pain explanations when clarity and direction are needed
  • Performing a disorganised or incomplete examination that undermines patient confidence
  • Failing to acknowledge the patient's experience before moving to assessment findings
  • Projecting clinical uncertainty through language or behaviour
patients assess clinical competence
through how they feel during the encounter

effective clinical communication in assessment:

  • Clearly explain the purpose of each assessment component
  • Normalise uncertainty where appropriate — without undermining confidence in the plan
  • Use language matched to the patient's health literacy and emotional state
  • Provide a clear, accessible explanation of findings and proposed direction
  • Invite questions and confirm patient understanding before ending the session

at the conclusion of assessment, the patient should know:

  • What the clinician understands about their problem
  • What the proposed treatment approach involves
  • What they can expect in terms of process and timeframe
  • What their role is in the recovery process

clinical communication is a clinical skill — it is trainable and essential

Summary

key takeaways

assessment operates across three domains:

  • Information — symptom history, behaviour, and warning signs
  • Indicators — contextual, medical, and lifestyle factors
  • Impact — beliefs, function, suffering, and goals

pain rating scales are limited:

  • useful for tracking change within an individual
  • insufficient without assessment of functional impact and meaning

objective examination is hypothesis-driven:

  • directed by subjective assessment findings
  • focused on four key questions: red flags, structural integrity, irritability, sensitivity

irritability and sensitivity guide clinical decisions:

  • irritability determines examination and treatment tolerance
  • sensitivity informs treatment selection and goal-setting

clinical reasoning produces a working hypothesis:

  • not a definitive diagnosis, but a credible starting point
  • revisable as new information emerges
  • directly linked to treatment direction
the assessment is not preparation for treatment
the assessment is the beginning of treatment

reflection questions

1. A patient presents with a pain score of 3/10 but reports being unable to return to work or participate in recreational activities. How should this finding inform your assessment and treatment planning?

2. During a subjective assessment, a patient describes pain that has been constant and unremitting for six weeks, is not influenced by position or movement, and is associated with unexplained fatigue. What is your clinical reasoning, and what is your next step?

3. You are assessing a patient with high irritability and significant fear of movement. How does this influence your objective examination, your communication, and your initial treatment approach?

4. A patient presents with widespread pain, multiple previous failed treatments, poor sleep, and significant work-related stress. Using the three-domain framework, identify the key assessment priorities and propose a treatment direction.

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