Resources documenting how solitary confinement exacerbates pre-existing mental illness and causes mental illness:

“Solitary Confinement and Mental Illness in U.S. Prisons: A Challenge for Medical Ethics” by Jeffrey L. Metzner and Jamie Fellner, The Journal of the American Academy of Psychiatry and the Law, March 2010.

“Psychologist testifies on the risks of solitary confinement” by Sadie Dingfelder, American Psychological Association, October 2012.

“More than 4,000 mentally ill inmates held in solitary in US – report” by Ed Pilkington, The Guardian, October 2018.

“Solitary Used More Often for Inmates with Mental Illness: Study” by J. Gabriel Ware, The Crime Report, September 2018.