Aim: The aim of this study is to develop a comprehensive definition of facticity, applicable to dementia nursing. Methods: Walker and Avant's Concept Analysis was used to analyse facticity. Published literature found in PubMed, CINAHL, PsycInfo, and Scopus using the search term facticity and nursing, as well as books and dictionaries and empirical data was used to clarify the concept. Results: Facticity in nursing dementia care is being in reality taking on responsibility to truth. Antecedents of facticity include persons occupied with caring a demented older person including full-time duties, often accompanied by resistive behaviours. They are overloaded both physically and psychologically. Being present and feeling compassion and nurturing the relationship with the demented older persons and in that way strengthen the caregiving process. Conclusion: Nurses need to be aware that all human beings are living with facticity.