By 2050 an estimated 135 million people worldwide will have dementia. In 2010 the global cost of dementia care was estimated at $604bn (£396bn; €548bn) and estimated to increase to $1tr by 2030.1 Of all chronic diseases, dementia is one of the most important contributors to dependence and disability.
In the absence of a cure, a professional belief that nothing can be done has contributed to delays in diagnosis. However, increasing evidence showing that dementia may be preventable has led to an international focus on earlier diagnosis and intervention. This review aims to summarise current evidence and best practice in the diagnosis and early intervention in dementia care