Katherine Kolcaba developed Comfort Theory in the late 1980s and early 1990s based on her analysis of the concept of comfort. She defined comfort as "the immediate experience of being strengthened by having the human needs for relief, ease, and transcendence met in four contexts: physical, psychospiritual, sociocultural, and environmental." The theory proposes that when nursing interventions effectively meet a patient's comfort needs, it leads to improved health seeking behaviors and positive outcomes. Comfort Theory has been widely adopted and tested in nursing research and applied to various healthcare settings.