Factors Associated with Symptom Reporting in U.S. Service Academy Cadets and NCAA Student Athletes without Concussion: Findings from the CARE Consortium | SpringerLink https://link.springer.com/article/10.1007/s40279-020-01415-4
Lack of sleep, stress can lead to symptoms resembling concussion https://news.osu.edu/lack-of-sleep-stress-can-lead-to-symptoms-resembling-concussion/