What psychological interventions are effective for individuals with prolonged post-concussion symptoms of at least 12 months following mild traumatic brain injury? A systematic review

For some, post-concussion symptoms following a mild traumatic brain injury (mTBI) are prolonged in nature, lasting for a minimum of 12 months and up to many years. There remains limited insight into the effectiveness of psychological interventions for the treatment of prolonged post-concussion symptoms (PrPCS). This systematic review aimed to evaluate the effectiveness of psychological interventions for PrPCS (>12 months post mTBI). A search was performed across five databases (PsychINFO, Medline, Web of Science, Cumulative Index to Nursing and Allied Health Literature (CINAHL), & PubMed). Two independent researchers assessed the studies against pre-defined eligibility criteria and completed quality appraisals. Ten studies were included in the review and underwent narrative synthesis. Four psychological interventions for PrPCS were found (i.e., Cognitive Behavioural Therapy (CBT), Neurofeedback Therapy, Psychoeducation, & Mindfulness-based therapy). Emerging empirical data tends to support the assertion that psychological interventions can improve PrPCS and quality of life. CBT appears to have the strongest evidence base to date and to be the most effective in improving anxiety, anger, and overall mental well-being. However, the evidence base is still very much in its infancy and requires research with more robust methodological designs to be conducted before any conclusions can be reliably asserted.