Brain photobiomodulation (PBM) therapy is an innovative modality for the stimulation of neural activity in order to improve brain function and is currently under investigation as a treatment for several diverse neurological disorders. Our emphasis on this study is to review the use of PBM as a treatment modality for concussions and the use of ImPACT® (Immediate Post-Concussion Assessment and Cognitive Testing) test to assess improvement in cognition and symptomatology in patients with post-concussion syndrome (PCS) treated with PBM.

• This will be a retrospective, single arm, unmasked, clinical study.
• Data scores will be collected for patients who initially underwent the Workplace Post-Injury 1 test of the ImPACT® test system prior to PBM treatment.
• Patients were treated with photobiomodulation using the BIOFLEX® DUO+ system that utilized a 180 bulb Light Emitting Diode (LED) array followed by laser probes. Both delivery methods were applied to the cervical spine and the cranium, and both entailed the use of red light at 660 nm wavelength and near-infrared light at 830-840 nm wavelength. Treatment is provided three times per week on alternating days with weekends off for 4 weeks for a total of 12 treatments utilizing Health Canada approved device specific protocol guidelines for treatment of the cervical spine.
• Data scores will be collected for a second ImPACT® test using the Workplace Post-Injury 2 test.
• Results of the Post-Injury 1 test and the Post-Injury 2 test will be compared.

Inclusion Criteria:

• Patients between the ages of 15-65 years clinically diagnosed with a mild Traumatic Brain Injury by a health professional and currently not undergoing any treatment during a 1 year period from January 2018 to December 2018.
• Documentation of the history of a qualifying mild Traumatic Brain Injury within 3 months of traumatic incident and/or diagnosis with persistent symptomatology after 3 months. For reference, International Classification of Diseases, Tenth Revision (ICD-10) clinical criteria require a history of TBI and the presence of three or more of the following eight symptoms: 1) headache, 2) dizziness, 3) fatigue, 4) irritability, 5) insomnia, 6) concentration or 7) memory difficulty, and 8) intolerance of stress, emotion, or alcohol4.

Exclusion Criteria:

• Any positive findings on imaging studies
• A diagnosis of or a family history of neuropsychiatric co-morbidity.
• Any additional diagnoses compounding the diagnosis of a concussion or mild traumatic brain injury (TBI)
• Currently undergoing any type of therapy

Data will be collected for all patients diagnosed with post-concussion syndrome who sought consult and treated using photobiomodulation therapy at Meditech Rehabilitation Centre using the BIOFLEX® DUO+ system

Only overall outcomes will be shared.