Classical definitions of trauma have emphasized exposure to a discrete, sudden, and life-threatening event (e.g. death, serious injury, or violence) as reflected in the DSM-5. However,  recent global change such as pandemics, geopolitical instability, and climate crises, have challenged that narrow framework. Researchers now confront a related phenomenon: trauma driven by prolonged uncertainty. Here, uncertainty itself-an open-ended, indeterminate horizon-functions as a chronic traumatic force that gradually depletes individual and collective coping resources. The threat has not necessarily occurred or concluded, but its looming presence colors every moment of the present.
Understanding trauma in times of uncertainty draws on several key concepts from clinical psychology and neuroscience:
1. Ambiguous loss: Coined by Pauline Boss in 1999, ambiguous loss describes losses that lack clarity or closure such as a disappearance of people or a fundaments lifestyle change. Because the event cannot be definitively processed or mourned, ambiguous loss produces “frozen grief” and paratraumatic symptoms: the mind cannot properly archive or conclude the loss. [1]
2. Intolerance of uncertainty: Defined by Dugas et al. as a core cognitive bias in which the mere possibility of a negative outcome is experienced as unacceptable and threatening, irrespective of its actual likelihood [2]. In settings of systemic instability, this may create cognitive vulnerability and can amplify anxiety and trauma symptoms by chronically activating the brain’s alarm systems.
3. Allostatic load: From a neurobiological perspective, sustained uncertainty triggers prolonged activation of the hypothalamic–pituitary–adrenal axis. McEwen’s concept of “allostatic load” refers to the cumulative physiological and psychological wear-and-tear resulting from the body’s repeated attempts to maintain stability in an unpredictable environment. This wear-and-tear underlies many physical and mental health consequences of chronic trauma [3].
Trauma in times of uncertainty is less like an explosion and more like a clock whose ticking is stuck. It appears subtly: inability to plan even a few weeks ahead, emotional numbness to continual bad news, sudden unprovoked anger, and pervasive “learned helplessness”. When people or communities feel stripped of control and a clear future, motivation to build, strive, and hope erodes.
Clinically, uncertainty-induced trauma differs from classic post-traumatic stress disorder (PTSD): instead of intrusive, vivid flashbacks of an event, patients report vague feelings of helplessness, emotional numbing, and persistent rumination about what comes next-symptoms that overlap with “learned helplessness” [4], where perceived lack of control leads to passivity and diminished adaptive behavior.
At the societal level, collective trauma from uncertainty can erode social capital. In the absence of stability and predictability, institutional and interpersonal trust-the foundations of societal resilience- becomes extremely vulnerable. The most dangerous outcome is normalization: when a new generation treats chronic anxiety as a personality trait or an expected condition. This passive acceptance  greatest asset for social capital. A society perpetually immersed in uncertainty loses faith in the future, in institutions, and in one another.
Recognizing uncertainty itself as a form of harm is the first step. Societies must shift from a culture of “being strong” to one of “being vulnerable”: naming fears, forming small local support networks, and strengthening family and community ties can counteract helplessness. Hope must be redefined-not as naive optimism or miraculous expectation, but as the courage to continue without knowing the final outcome.
Antonovsky’s “sense of coherence” (1979) captures this stance: health emerges from an attitude that life’s stimuli are comprehensible, challenges are manageable, and existence is meaningful. Comprehensibility, manageability, and meaningfulness map onto cognitive, practical, and motivational dimensions that shape resilience-so health depends not only on stress levels, but on how individuals interpret and respond to adversity. [5]
Therapeutically, this calls for a shift from event-focused models to transdiagnostic approaches. Interventions that directly target intolerance of uncertainty-such as CBT protocols tailored to uncertainty-induced distress-have shown promise in reducing trauma and anxiety in unstable contexts. [6]
Future research should longitudinally track the cumulative effects of chronic uncertainty on neurocognitive systems and develop culturally grounded measures of this form of trauma.
Ultimately, fostering resilience today means neither denying reality nor retreating into false optimism. It means cultivating “psychological flexibility” and reconstructing meaning amid ambiguity. The scientific community must provide rigorous conceptual tools to help policymakers and clinicians support people living under the prolonged shadow of uncertainty.

Conflict of Interest

Author declared no conflict of interest.