Understanding the causes, symptoms and effects of young-onset dementia.

Young-onset dementia refers to dementia that develops before the age of 65 years. It can present with a wide variety of symptoms including cognitive, behavioural, neurological and systemic symptoms, which reflects the wide range of possible causes. Young-onset dementia profoundly affects all aspects of people's lives, including relationships, employment and finances, and it will also profoundly affect relatives and carers. This article outlines the causes, symptoms and effects of young-onset dementia and describes the role of nurses in providing care and support to people with this progressive condition.