The sections are organised with an introduction followed by definitions and classifications, then epidemiology, then psychosocial aetiology, clinical features, neurobiology, family peers and carers, and finally conclusions. The latest DSM and ICD classifications are covered and eating disorders not yet classified. The authors cover the clinical features of eating disorders complicating diabetes type 1, the neurobiology of eating disorders including immunology, neurotransmitters and appetite. The treatment section will include emergency treatment, evidence-based psychological approaches, intensive interventions and emerging areas, and the family section will include voluntary bodies, family and carers and pregnant mothers with eating disorders. Outcome covers prognosis in all the major eating disorders and describe the severe and enduring type of eating disorder.