What does it mean to call chronic pain a brain disease?

MLA

Sullivan, Mark D., et al. “What Does It Mean to Call Chronic Pain a Brain Disease?” The Journal of Pain, vol. 14, no. 4, Apr. 2013, pp. 317–22. EBSCOhost, https://doi.org/10.1016/j.jpain.2012.02.012.

APA

Sullivan, M. D., Cahana, A., Derbyshire, S., & Loeser, J. D. (2013). What does it mean to call chronic pain a brain disease? The Journal of Pain, 14(4), 317–322. https://doi.org/10.1016/j.jpain.2012.02.012

Chicago

Sullivan, Mark D, Alex Cahana, Stuart Derbyshire, and John D Loeser. 2013. “What Does It Mean to Call Chronic Pain a Brain Disease?” The Journal of Pain 14 (4): 317–22. doi:10.1016/j.jpain.2012.02.012.