This document provides an in-depth discussion and explanation of the Self-Care Deficit Nursing Theory. It begins by establishing caring as the central focus of nursing and discusses caring as a multidimensional concept. It then outlines the key assumptions, concepts, and components of the theory. The assumptions are based on unitary-transformative paradigms. The five concepts of the theory are manifesting intentions, appreciating pattern, attuning to dynamic flow, experiencing the infinite, and inviting creative emergence. The two functional components are human beings and the pan-dimensional environment/universe. The document examines the relationship between the structure and function of the theory and provides further clarification on the concepts.