Judge Kelli Johnson was arrested last year, but the charges were later dropped. Her attorney said her symptoms could be blamed on a fall from a motorized scooter.
The decision follows the review of the incident on September 25 in which Miami Dolphins quarterback Tua Tagovailoa suffered an apparent head injury and was later allowed to re-enter the game.
According to an Instagram account set up to provide updates on injured Little Leaguer Easton Oliverson, the results from a CAT scan performed by doctors after the 12-year-old fell and hit his head a second time came back "normal."
The Astros star is day-to-day after a late-game collision in Oakland. Like his hamstring injury earlier this season, this involved running toward first base.
CTE is a degenerative brain disease linked to head trauma and concussions and has been shown to cause a range of symptoms, including violent mood swings and memory loss.
The C-shaped device, called the Q-Collar, works by clamping down on blood vessels in the neck.