What happens when personhood is threatened by a disease such as Dementia? In this project I intend to examine what exactly determines personhood, identity and the self in the elderly when threatened by Alzheimer’s disease and dementia. How can attitudes and care make a difference in our consideration of what exactly it means to be a person? Philosophy offers an account of personhood that science cannot entirely explain. Using thinkers such as Locke and Damasio this project will look at some of the prevailing theories of identity in dementia and what steps we can take to preserve personhood.