A retrospective cohort study describing the characteristics of patients under 18 years old in one section 136 suite.

Section 136 of the Mental Health Act 1983 is an authority allowing police officers to remove a person 'who appears to him to be suffering from mental disorder' from a public area. There has been much media coverage regarding the inappropriate detention of minors under section 136 and the suggestion that many were taken to police cells, as there were no suitable places of safety. Although previous studies describe characteristics of a typical individual detained under section 136, few distinguish the differences between adults and adolescents. Profiling these adolescents can help to identify adolescents at risk, allowing for earlier intervention and prevent the inappropriate detention of individuals. Data were collected retrospectively for all patients under 18 years of age who were brought to a section 136 suite in south-west London over a five-year period. The typical profile of an adolescent presenting to this suite was a 16-year-old female of white ethnicity who was sectioned in a public area due to attempted suicide or deliberate self-harm. The individual is more likely to have mental or behavioural difficulties, a history of abuse, be under the care of local authorities and have had previous convictions compared to adolescents in the general population.