Pain occupies a pivotal and contested position across the depth-psychology corpus, traversing neuroscience, phenomenology, somatic therapy, philosophy, and addiction medicine. At one pole, Antonio Damasio’s neurobiological analyses insist on the fundamental dissociation between pain sensation and pain affect: the somatosensory mapping of tissue damage is neurophysiologically distinct from the suffering it engenders, with the latter arising only when body-state deviations produce emotional cascades. Lisa Feldman Barrett extends this constructionist reading, treating pain as a predictively assembled experience—one the brain generates from nociceptive input, conceptual frameworks, and prior expectation, rendering chronic pain a disease of erroneous prediction. A. D. Craig, from interoceptive neuroscience, anchors nociception within the homeostatic sensory hierarchy as a primary signal of bodily condition, sharing neural substrates with all affective body-states. David Sedgwick, speaking from Jungian psychotherapy, insists that psychological pain is a defining human characteristic—both adaptive warning and the ground of deepest metaphysical inquiry—while Fogel and the somatic tradition urge embodied attention as the only authentic passage through pain rather than around it. Sri Aurobindo and Plotinus frame the pain-pleasure axis as ontologically contingent: habitual response patterns, not necessities. Masters identifies analgesic avoidance as spiritual bypassing, disconnecting subjects from compassion itself. Together these voices establish pain as simultaneously signal, construction, and existential threshold.