SUMMARYTrauma-informed approaches emerged partly in response to research demonstrating that trauma is widespread across society, that it is highly correlated with mental health and that this is a costly public health issue. The fundamental shift in providing support using a trauma-informed approach is to move from thinking ‘What is wrong with you?’ to considering ‘What happened to you?’. This article, authored by trauma survivors and service providers, describes trauma-informed approaches to mental healthcare, why they are needed and how barriers can be overcome so that they can be implemented as an organisational change process. It also describes how past trauma can be understood as the cause of mental distress for many service users, how service users can be retraumatised by ‘trauma-uninformed’ staff and how staff can experience vicariously the service user's trauma and can themselves be traumatised by practices such as restraint and seclusion. Trauma-informed mental healthcare offers opportunities to improve service users' experiences, improve working environments for staff, increase job satisfaction and reduce stress levels by improving the relationships between staff and patients through greater understanding, respect and trust.LEARNING OBJECTIVES Appreciate broad-based definitions of traumaGain an understanding of what trauma-informed approaches are and why they have emerged, including the potential for (re)traumatisation in the mental health systemConsider how to practise trauma-informed approaches, including in ‘trauma-uninformed’ organisations, and the potential barriers to and opportunities from doing soDECLARATION OF INTERESTA. S. is funded by a National Institute for Health Research (NIHR) Post-Doctoral Fellowship. This article presents independent research partially funded by the NIHR. The views expressed are those of the authors and not necessarily those of the National Health Service, the NIHR or the Department of Health.

Purpose-The purpose of this paper is to describe and explain trauma-informed approaches (TIAs) to mental health. It outlines evidence on the link between trauma and mental health, explains the principles of TIAs and their application in mental health and explores the extent to which TIAs are impacting in the UK. Design/methodology/approach-The approach is a conceptual account of TIAs including a consideration of why they are important, what they are and how they can become more prevalent in the UK. This is supported by a narrative overview of literature on effectiveness and a scoping of the spread of TIAs in the UK. Findings-There is strong and growing evidence of a link between trauma and mental health, as well as evidence that the current mental health system can retraumatise trauma survivors. There is also emerging evidence that trauma-informed systems are effective and can benefit staff and trauma survivors. Whilst TIAs are spreading beyond the USA where they developed, they have made little impact in the UK. The reasons for this are explored and ways of overcoming barriers to implementation discussed. Originality/value-This paperauthored by trauma survivors and staffdescribes an innovative approach to mental health service provision that, it is argued, could have immense benefits for staff and service users alike.

Child abuse and neglect play a causal role in many mental health problems. Knowing whether users of mental health services were abused or neglected as children could be considered essential for developing comprehensive formulations and effective treatment plans. In the present study we report the findings of a systematic review, using independent searches of three databases designed to discover how often mental health staff find out whether their clients were abused or neglected as children. Twenty-one relevant studies were identified. Most people who use mental health services are never asked about child abuse or neglect. The majority of cases of child abuse or neglect are not identified by mental health services. Only 28% of abuse or neglect cases identified by researchers are found in the clients' files: emotional abuse, 44%; physical abuse, 33%; sexual abuse, 30%; emotional neglect, 17%; and physical neglect, 10%. Between 0% and 22% of mental health service users report being asked about child abuse. Men and people diagnosed with psychotic disorders are asked less than other people. Male staff ask less often than female staff. Some improvement over time was found. Policies compelling routine enquiry, training, and trauma-informed services are required.

Child abuse and neglect are strongly associated with many subsequent mental health problems. This review summarizes the research on how adult mental health services respond when child abuse or neglect become known. MEDLINE, PsycINFO, and Scopus were searched for studies with rates of responding in various ways to child abuse and neglect by mental health professionals. Thirteen studies were identified: seven case note reviews, three surveys of staff, and three sets of interviews with service users. Rates of inclusion of abuse or neglect in treatment plans ranged from 12% to 44%. Rates of referral to abuse-related therapy ranged from 8% to 23%. Rates were lower for neglect than for abuse and were also lower for men and people with a diagnosis of psychosis. Two per cent or less of all cases were referred to legal authorities. The studies varied in focus and methodology, but all indicated inadequate clinical practice. The rates of abused or neglected people referred for therapy are actually lower than indicated by this review because most users of adult mental health services are not asked about abuse or neglect in the first place. The barriers to good practice, and the need for trauma-informed services, are discussed.