Eating problems Uncommon among men in prison, eating problems commonly affect women prisoners, including anorexia, bulimia and binge eating, which are often expressions of pain and difficulties in life. Where studies of mental illness have been conducted with prison populations, the prevalence has been consistently shown to be high. Some other conditions which prison staff may encounter more rarely include: Bipolar disorder A condition involving extreme and overwhelming mood swings – from feeling low and lethargic to feeling high and overactive. These changes are distressing and can have a severe impact on daily life. Schizophrenia A condition that causes hallucinations, delusions and disorganised thinking. It may also lead to people being disconnected from their emotional state. Screening and assessment Through an initial screening of new prisoners, as required by the UN Nelson Mandela Rules and the Bangkok Rules, critically poor mental health can be detected. This is important for preventing suicide or self-harm, ensuring appropriate interventions, and can improve the safety of prisoners and staff.8 9 08