Within the depth-psychology corpus, ‘trigger’ occupies a pivotal position at the intersection of somatic neuroscience, trauma theory, and clinical intervention. The term designates any stimulus—sensory, relational, environmental, or internal—that activates a previously conditioned threat-response, typically bypassing conscious appraisal and reconstituting the physiological conditions of an earlier traumatic event. Ogden’s sensorimotor framework establishes the foundational clinical architecture: triggers are misidentified neuroceptive signals that collapse the distinction between present safety and past danger, driving arousal outside the window of tolerance. Najavits extends this into the dual-diagnosis context of PTSD and substance abuse, where triggers are among the most ubiquitous and underestimated clinical phenomena, demanding active coping rehearsal rather than mere exposure. Winhall’s Felt Sense Polyvagal Model foregrounds the somatic signature of the trigger—a ‘thick sensation in the chest’—as the entry point for therapeutic renegotiation. Bosnak contributes a more esoteric deployment, mapping ‘trigger points’ as localized somatic coordinates within an embodied imagination practice. Across these positions, a shared tension persists: whether triggers are best approached as objects of psychoeducational awareness, somatic renegotiation, or strategic avoidance. The clinical stakes are considerable—misidentifying triggered states as present-moment realities sustains the trauma loop, while accurate recognition opens the possibility of re-regulation.