• Joana Barroso, Paulo Branco, and Apkar Vania Apkarian.
• Department of Physiology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois; Department of Physical Medicine and Rehabilitation, Northwestern University, Feinberg School of Medicine, Chicago, Illinois; Center for Chronic Pain and Drug Abuse, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
• Transl Res. 2021 Dec 1; 238: 768976-89.

AbstractChronic pain is a leading cause of disability worldwide and its prevalence is likely to increase over the next decades. Treatment for chronic pain remains insufficient and therapeutical advances have not made comparable progress with that for many chronic disorders, thus amplifying the concern on the future burden of the disease. At the same time, and even after decades of intense research, the underlying pathophysiology of chronic pain remains minimally understood. We believe advancing our current understanding of chronic pain requires mechanistically explicit, hypothesis-driven, and clinically focused models. In this review we highlight some of the main findings over the last decades that have contributed to the present knowledge of brain mechanisms of chronic pain, and how such advances were possible due to a reverse translational research approach. We argue that this approach is essential in the chronic pain field, in order to generate new scientific hypotheses, probe physiological mechanisms, develop therapeutic strategies and translate findings back into promising human clinical trials.Copyright © 2021 Elsevier Inc. All rights reserved.

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