Nursing theories are organized bodies of knowledge to define what nursing is, what nurses do, and why they do it. Nursing theories provide a way to define nursing as a unique discipline that is separate from other disciplines (e.g., medicine). It is a framework of concepts and purposes intended to guide nursing practice at a more concrete and specific level.
Nursing, as a profession, is committed to recognizing its own unparalleled body of knowledge vital to nursing practicenursing science. To distinguish this foundation of knowledge, nurses need to identify, develop, and understand concepts and theories in line with nursing. As a science, nursing is based on the theory of what nursing is, what nurses do, and why. Nursing is a unique discipline and is separate from medicine. It has its own body of knowledge on which delivery of care is based.