Background: Long-term conditions are common in people living with dementia; their self-management is an important determinant of wellbeing. Family carers often support or substitute self-care activities, and act as proxies for self-management, as dementia progresses. Objectives: To conduct the first systematic review of how management of long-term conditions in people with dementia is best enabled and supported, including factors that facilitate or inhibit self-management and management by a proxy. Design: Systematic review.