It is 40 years since the seminal description of ‘Munchausen Syndrome by Proxy’ (MSbP) by UK Paediatrician Professor Sir Roy Meadow.1 There have been a number of developments since, which include terminology, definition, prevalence and management. The Royal College of Paediatrics and Child Health (RCPCH) adopted the term ‘Fabricated or Induced Illness by Carers’ (FII) in 2002,2 and updated their guidance in 2009.3 The most recent version of the RCPCH Child Protection Companion extended FII to embrace perplexing presentations with suggestions for management.4 The important evolution in the UK has been towards earlier diagnosis and intervention without the need for proof of deliberate deception. . To read the full article, log in using your NHS OpenAthens details.