Delayed-Onset Adjustment Disorder After Accident-Related Injuries: A Retrospective Analysis of Legal Cases

An adjustment disorder (AjD) is defined as a maladaptive response to an identifiable stressor, with symptoms expected to emerge within up to three months of that stressor. Recent evidence, however, indicates that AjD symptoms may appear long after the onset of that stressor, especially with chronic illness or ongoing stress. We conducted a retrospective exploratory analysis of 22 validity-checked forensic cases retained after the screening of 597 medical expert witness assessments (MEWAs). We examined onset latency relative to the index event and whether later or ongoing accident-related stressors were documented in proximity to AjD onset. In ~82% of cases, a clinically significant AjD developed after three months post-injury/illness, well beyond the acute aftermath of the incident. In approximately 55% of the cases, loss of recovery expectancy (LRE) was documented as a later-occurring accident- or illness-related stressor. Exploratory exact Wilcoxon–Mann–Whitney tests compared GPQ and SIMS scores between onset groups and GPQ scores between cases with and without LRE. The findings suggest that AjD symptoms may emerge long after the index event while still occurring in temporal proximity to later or ongoing accident-related stressors. These observations are preliminary and do not establish a definitive delayed-onset subtype or a causal trajectory.