This book brings together international, linguistic research with a focus on interaction in multilingual encounters involving people with dementia in care and healthcare settings. The methodologies used (Conversation Analysis, Ethnography and Discursive Constructionism) capture practices on the micro-level, revealing how very subtle details may be of critical importance for the everyday well-being of participants with dementia, particularly in settings and contexts where there is a lack of a common verbal language of interlocutors, or where language abilities have been lost as a result of dementia. Chapters analyse the practices and actions employed by interlocutors to facilitate mutual understanding, enhance high-quality social relations and assure optimal care and treatment, in spite of language and cognitive difficulties, with an emphasis put on the participants' remaining capacities, and what can be achieved between people with dementia and their interlocutors in a collaborative fashion. This book goes beyond the study of two-party communication to address multiparty and group interactions which are common in residential care and other healthcare settings and will be of interest to professionals and policy makers as well as to medical sciences and linguistics researchers and students.