Self-management support has been identified as an effective nursing intervention for improving outcomes for people with chronic conditions, yet this concept lacks a clear definition. Furthermore, the concept has not been used in school nursing literature despite the clear connection between school nursing practice and tenets of self-management support. Additionally, the concept has not been explored in the context of difficult-to-manage mental health concerns, such as psychogenic nonepileptic seizures. A conversion disorder in which seizure events in the absence of abnormal brainwave activity result from stress, psychogenic nonepileptic seizures affect the quality of life and school experience for students experiencing them and could be addressed through self-management support. This hybrid concept analysis included a review of extant literature and semi-structured interviews with school nurses to ascertain a definition of self-management support in the context of school nursing using care of students with psychogenic nonepileptic seizures as an exemplar.