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Special Report

Objectively Measuring Pain Using Facial Expression: Is the Technology Finally Ready?

, , , , , & show all
Pages 105-113 | Received 21 Aug 2017, Accepted 01 Dec 2017, Published online: 22 Feb 2018
 

Abstract

Currently, clinicians observe pain-related behaviors and use patient self-report measures in order to determine pain severity. This paper reviews the evidence when facial expression is used as a measure of pain. We review the literature reporting the relevance of facial expression as a diagnostic measure, which facial movements are indicative of pain, and whether such movements can be reliably used to measure pain. We conclude that although the technology for objective pain measurement is not yet ready for use in clinical settings, the potential benefits to patients in improved pain management, combined with the advances being made in sensor technology and artificial intelligence, provide opportunities for research and innovation.

Financial & competing interests disclosure

C Nduka is co-founder and director of Emteq Ltd. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

No writing assistance was utilized in the production of this manuscript.

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