Solitary confinement — also called restrictive housing, segregation, or administrative isolation — confines prisoners to a cell for roughly 22-23 hours a day with minimal human contact. Tens of thousands of people are held in some form of solitary on any given day in U.S. prisons and jails.
Research links prolonged isolation to severe psychological harm, including depression, paranoia, hallucinations, and elevated suicide risk. International bodies treat prolonged solitary as cruel treatment. Several states have enacted limits on duration, populations (juveniles, pregnant people, those with serious mental illness), or conditions.
Corrections officials argue some form of segregation is necessary to manage violent prisoners, gang activity, and prisoners who pose risks to staff or other inmates. The debate is over duration limits, which populations should be exempt, and what alternatives can manage security risks.