Child and Adolescent Mental Health Services (CAMHS) is the name for NHS-provided services in the United Kingdom for children, generally until school-leaving age, who are having difficulties with their emotional well-being or are deemed to have persistent behavioural problems. CAMHS are organised locally, and the exact services provided may vary, often by local government area. History In Europe and the United States child-centred mental health did not become a medical specialty until after World War I. In the United Kingdom children's and young people's mental health treatment was for decades the remit of the Child Guidance Movement increasingly working after World War II with local educational authorities and often influenced by psychoanalytic ideas. Provision in NHS hospitals was piecemeal across the country and disconnected from the youth justice system. However opposition to Psychoanalysis with its pioneering research work into childhood and adolescence, which was poorly understood by proponents of the Medical model, caused the service to be abandoned in favour of evidence-based medicine and evidence-based education. This led to the eclipse of the multidisciplinary child guidance approach in the 1990s and a public policy-motivated formal take-over by the NHS. The development of CAMHS within a four-tiered framework started in 1995. In 1998, 24 CAMHS Innovation Projects started, and the Crime and Disorder Act 1998 established related youth offending teams. In 2000 the NHS Plan Implementation Programme required health and local authorities to jointly produce a local CAMHS strategy. In November 2008 the independent CAMHS Review was published. From about 2013 onward major concerns have been expressed about reductions in CAMHS, and apparently increasing demand, and in 2014 the parliamentary Health Select Committee investigated and reported on provision. In 2015 the government published a review, and promised a funding increase of about £250 million per year. However the funds were not ring-fenced and as of 2016 only about half of England's Clinical commissioning groups had increased local CAMHS funding. CAMHS funding remains a popular topic for political announcements of funding and the current aim is to increase funding to the level that 35% of young people with a disorder are able to receive a specialist service. Different models of service organisation are also advocated as part of this transformation. In Scotland, between 2007 and 2016 the number of CAMHS psychologists had doubled, reflecting increased demand for the service. However in September 2020, 53.5% of CAMHS patients in Scotland had waited for