A BBC article explains how patients with persisting post-concussion symptoms (PPCS) and Long Covid exhibit similar symptoms, including fatigue, exercise intolerance, sleep disturbances, memory and concentration problems, light and sound sensitivity, and visual dysfunction, such as impairments in eye tracking.

A study published in the Journal of Neuroinflammation found that athletes with PPCS due to sports-related concussions (SRC) have elevated levels of inflammation in the brain. Of 27 cerebrospinal fluid (CSF) biomarkers of inflammation tested for, eight were significantly higher in athletes with PPCS compared to healthy controls.