Numinous Inflation names the condition in which the ego, overwhelmed by or identified with the transpersonal energies of the Self, assumes attributes properly belonging to the divine — omnipotence, omniscience, immortality, unique election. The concept sits at the intersection of Jung’s doctrine of the numinosum, derived from Rudolf Otto’s phenomenology of the holy, and his structural account of the ego-Self relation. Within the depth-psychology corpus it is treated less as a pathological curiosity than as an inherent hazard of the individuation process itself: every genuine encounter with an archetype carries the risk that the ego, rather than relating to the numinous content, will be absorbed by it. Edinger systematises the danger most rigorously in *Ego and Archetype*, cataloguing inflation’s symptomatic forms — power motivation, intellectual rigidity, lust, the illusion of immortality — as expressions of the ego’s transgression of its proper limits. Von Franz, working at the clinical frontier, maps how possession by a numinous content produces fanaticism and, in extremis, psychotic enactment. Jung himself traces the mechanism through alchemy and the mana-personality, warning that the hero’s temptation to identify with the archetype brings psychic catastrophe. Kalsched and Peterson extend the analysis to trauma and addiction respectively, showing how an inflated ego organised around unconscious Self-identification is peculiarly resistant to therapeutic dissolution. The central tension in the literature is whether inflation can be preventively managed — through ethical humility, symbolic understanding, or connection with one’s limitations — or whether its irruption is, to some degree, a necessary moment within psychological transformation.