Pain Assessment and Management in Individuals with Intellectual Disabilities

Individuals with intellectual disabilities experience acute and chronic pain at rates comparable to the general population, yet their impaired communication often obscures recognition and treatment. Conventional self-report measures are unreliable or unusable for many in this group, prompting reliance on proxy reports, behavioural observation and physiological monitoring. Standardised observational scales have been developed to detect changes in facial expression, body movement and vocalisation, while novel technologies—such as wearable sensors and smartphone applications—offer continuous, objective data on autonomic and acoustic markers of distress. Pain management in this population must balance efficacy with safety, addressing potential adverse effects linked to pharmacotherapy and ensuring non-pharmacological options are accessible. Multidisciplinary collaboration among caregivers, clinicians and technologists is crucial to translate assessment advances into tailored interventions, improve quality of life and reduce healthcare disparities on a global scale.

Research from Nature Portfolio

Recent studies have demonstrated that real-world heart-rate monitoring can serve as an objective indicator of acute pain and distress in non-communicating adults with intellectual disabilities. By defining episodes of elevated heart rate relative to individual daily baselines, researchers identified previously unrecognised painful or discomforting events in care routines, such as limb stretching or transfers. The absence of a heart-rate increase in presumed stressful situations similarly helped to refine caregiving practices. This proof-of-concept underscores the potential of continuous physiological surveillance to alert caregivers to unexpressed pain, optimise environmental factors and tailor analgesic or supportive measures in real time.

Pain Assessment and Management in Individuals with Intellectual Disabilities publication trend

The graph below shows the total number of articles in pain assessment and management in individuals with intellectual disabilities across all publications each year (not limited to Nature Index journals).

Technical terms

Intellectual disability: A neurodevelopmental condition characterised by significant limitations in intellectual functioning and adaptive behaviour emerging before adulthood.

Non-communicating: Describes individuals unable to use verbal or formal written language to express needs or sensations, necessitating indirect assessment methods.

Facial Action Coding System (FACS): A structured method for objectively coding facial movements by decomposing expressions into individual action units.

Autonomic response: Physiological reactions governed by the autonomic nervous system, including changes in heart rate, skin conductance and respiration, which can signal pain or distress.

Observational pain assessment: The use of standardised behavioural checklists or scales to infer the presence and intensity of pain based on visible cues when self-report is not feasible.

References

1. Diagnosing Pain in Individuals with Intellectual and Developmental Disabilities: Current State and Novel Technological Solutions. Diagnostics (2023).
2. Challenges in pain assessment and management among individuals with intellectual and developmental disabilities. PAIN Reports (2020).
3. Increased heart rate functions as a signal of acute distress in non-communicating persons with intellectual disability. Scientific Reports (2021).
4. Effects of Aquatic Therapy on Pain in Children with Profound Intellectual and Multiple Disabilities—A Prospective Observational Study. Creative Education (2021).