When Pain Gets Stuck: The Evolution of Pain Chronification and Treatment Resistance

David Boorsook, Andrew M. Youssef, Laura Simons, Igor Elman, Christopher Eccleston

Research output: Contribution to journalReview article

25 Citations (Scopus)

Abstract

It is well-recognized that, despite similar pain characteristics, some people with chronic pain recover, whereas others do not. In this review, we discuss possible contributions and interactions of biological, social, and psychological perturbations that underlie the evolution of treatment-resistant chronic pain. Behavior and brain are intimately implicated in the production and maintenance of perception. Our understandings of potential mechanisms that produce or exacerbate persistent pain remain relatively unclear. We provide an overview of these interactions and how differences in relative contribution of dimensions such as stress, age, genetics, environment, and immune responsivity may produce different risk profiles for disease development, pain severity, and chronicity. We propose the concept of "stickiness" as a soubriquet for capturing the multiple influences on the persistence of pain and pain behavior, and their stubborn resistance to therapeutic intervention. We then focus on the neurobiology of reward and aversion to address how alterations in synaptic complexity, neural networks, and systems (eg, opioidergic and dopaminergic) may contribute to pain stickiness. Finally, we propose an integration of the neurobiological with what is known about environmental and social demands on pain behavior and explore treatment approaches based on the nature of the individual's vulnerability to or protection from allostatic load.
Original languageEnglish
Pages (from-to)2421-2436
JournalPain
Volume159
Issue number12
Early online date17 Sep 2018
DOIs
Publication statusPublished - 1 Dec 2018

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