Classification of Comprehensive Neuro-Ophthalmologic Measures of Postacute Concussion.

Importance: Symptom-based methods of concussion diagnosis in contact sports result in underdiagnosis and repeated head injury exposure, increasing the risk of long-term disability. Measures of neuro-ophthalmologic (NO) function have the potential to serve as objective aids, but their diagnostic utility is unknown.

Objective: To identify NO measures that accurately differentiate athletes with and without concussion.

Demographics and management of outpatient concussion visits among neurologists and non-neurologists: 2006-2016.

Aim: Describe the patient demographics and management of outpatient concussion visits, focusing on neurologists.

Materials & Methods: We used the National Ambulatory Medical Care Survey to provide national estimates on the demographics and clinical decisions of concussion visits from 2006 to 2016, which were identified with International Classification of Disease-9/10 codes.

Results: From 2006 to 2016, there were an estimated 11 million visits nationally.

Spatial regression analysis of MR diffusion reveals subject-specific white matter changes associated with repetitive head impacts in contact sports.

Repetitive head impacts (RHI) are a growing concern due to their possible neurocognitive effects, with research showing a season of RHI produce white matter (WM) changes seen on neuroimaging. We conducted a secondary analysis of diffusion tensor imaging (DTI) data for 28 contact athletes to compare WM changes. We collected pre-season and post-season DTI scans for each subject, approximately 3 months apart.