B - 38 Concussion Clinical Outcomes and Recovery Time in Individuals with Pre-Existing Anxiety and/or Depression

Abstract Objective Post-injury anxiety and mood difficulties are common symptoms following concussion. However, limited research has explored the impact of anxiety and/or depression history on individuals’ clinical outcomes and recovery time post- concussion. This study aims to determine the influence of anxiety and/or depression history on individuals’ clinical outcomes and examine outcomes of those with both anxiety and depression history. Method We conducted a retrospective review of 297 concussed patients. All participants completed a clinical interview, Immediate Post-Concussion Assessment and Cognitive Test (ImPACT), Clinical Profile Screen (CP-Screen), and Vestibular/Ocular-Motor Screening (VOMS). Participants were categorized into one of three anxiety-depression subgroups — no anxiety or depression history (NONE), anxiety or depression history (EITHER), or anxiety and depression history (BOTH)— based on clinical interviews. Results The BOTH group reported higher symptom burden (CP Screen Total Score; p < 0.001) and performed worse on ImPACT Visual Memory (p = 0.03) compared to NONE and EITHER groups. Overall, recovery time differed significantly between groups (p = 0.006). The NONE group recovered significantly faster than the EITHER group (p = 0.04), and the BOTH group (p = 0.03). However, no significant difference in recovery time was noted between the EITHER and BOTH groups (p = 0.58). Conclusions Our results suggest that anxiety/depression history is associated with more severe post-concussion symptoms, worse visual memory, and longer recovery times when compared to those with no history of anxiety or depression. These findings highlight the importance of screening for anxiety and depression history in clinical settings and exploring ways to improve concussion recovery for individuals with anxiety and/or depression history.