A Multimethod Approach to Understanding the Biopsychosocial Underpinnings of Chronic Cancer-Related Pain in Cancer Survivors

Abstract

Background: Chronic cancer-related pain is a considerable problem in cancer survivors. The incidence of chronic pain in cancer survivors is nearly double the rate in the general population. Chronic cancer-related pain reduces quality of life and results in higher healthcare utilization. Due to a lack of alternative treatments, the management of chronic cancer-related pain relies on a biomedical model, with opioids being the cornerstone of cancer-related pain management. As concerns about the risks of long-term opioid therapy rise, there is a need to understand the factors that influence chronic cancer-related pain experience. This manuscript dissertation aims to answer the overarching question, “What are the unique factors that inform the chronic cancer-related pain experience in cancer survivors?” Methods: First, an integrative review aimed to examine the evidence of long-term opioid use in cancer-survivors. Next, a qualitative study using descriptive phenomenology was conducted to develop a deeper understanding of the daily lived experience of chronic cancer-related pain. And finally, a prospective cross-section quantitative study was completed to quantify the contribution of unique cancer-specific factors to the chronic cancer-related pain experience in cancer survivors. Results: The integrative review shed light on the biopsychosocial factors associated with the transition to long-term opioid therapy (LTOT), including the role of cancer type, medical comorbidities, mental health diagnoses, and socioeconomic factors. No studies examined pain severity, pain interference, or cancer-specific psychosocial factors in cancer survivors prescribed LTOT. Second, cancer survivors describe living with chronic cancer-related pain as the cost of survival. Yet, their suffering was often invisible to others. The role of opioids in chronic cancer-related pain leads to strained communication with clinicians and the need to self-navigate a treatment plan characterized by ‘trying everything’. And finally, select cancer-specific psychosocial factors explained relatively little variance in the pain experience compared to non-cancer specific factors of multisite pain and pain catastrophizing. Conclusions: The constellation of the finding from this body of work demonstrates unique factors that inform the chronic cancer-related pain experience in cancer survivors, and several areas of overlap with other chronic pain syndromes.