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Can interoceptive sensitivity provide information on the difference in the perceptual mechanisms of recurrent and chronic pain? Part I. A retrospective clinical study related to multidimensional pain assessment

Abstract Objectives Although neurobiological research has shown that interoception plays a role in the perception of pain and its chronification, the relationship between interoceptive sensitivity and pain has not been… Click to show full abstract

Abstract Objectives Although neurobiological research has shown that interoception plays a role in the perception of pain and its chronification, the relationship between interoceptive sensitivity and pain has not been definitively confirmed by clinical studies. The aim of this study was therefore to better understand the relationship between interoceptive sensitivity, somatization, and clinical pain, and to identify any differences in the interoceptive sensitivity of patients with recurrent vs. chronic pain. Methods Scores from 43 Chronic pain subjects, assessed using ICD-11 Criteria; 42 healthy subjects (without pain or psychiatric disorders); and 38 recurrent pain subjects on the Multidimensional Assessment of Interoceptive Awareness (MAIA), Body Perception Questionnaire (BPQ-SF), Somatosensory amplification scale (SSAS), Patient Health Questionnaire (PHQ-15), Symptom Checklist-Revised (SCL-90-R), and Italian Pain Questionnaire (IPQ) were compared. Results Negative attention to the body was indicated by higher scores of psychosomatic dimensions as SSAS, SCL90R somatization, and PHQ-15 in recurrent, but especially chronic pain (p<0.000 for all). An increase in psychosomatic dimension scores (i.e., somatization, somatosensory amplification) was associated with an increase in both autonomic nervous system reactivity (ANSR) dimension scores and the negative influence of the Not-worrying, attention regulation and trusting of the MAIA. In contrast, the presence of pain and scores for its dimensions with associated with lower supra-diaphragmatic activity as per the BPQ. Conclusions Pain chronification might depend on both the impairment of interoceptive sensitivity and an increase on psychosomatic dimensions via modification of ANSR hyperactivity and a reduction of the MAIA Not-worrying dimension.

Keywords: chronic pain; pain; recurrent chronic; study; interoceptive sensitivity

Journal Title: Scandinavian Journal of Pain
Year Published: 2022

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