Key references: What is pain?

Hunter Integrated Pain Service. Brainman videos [various]. Newcastle, NSW: Hunter New England Local Health District; 2019. http://www.hnehealth.nsw.gov.au/Pain/Pages/Brainman-Videos.aspx
Raja SN, Carr DB, Cohen M, Finnerup NB, Flor H, Gibson S, et al. The revised International Association for the Study of Pain definition of pain: concepts, challenges, and compromises. Pain 2020. https://www.ncbi.nlm.nih.gov/pubmed/32694387
Treede RD. The International Association for the Study of Pain definition of pain: as valid in 2018 as in 1979, but in need of regularly updated footnotes. Pain Rep 2018;3(2):e643. https://www.ncbi.nlm.nih.gov/pubmed/29756089