By John Leddy, MD Joelle is an 18-year-old high school soccer player who sustained a head injury 3 months ago during a game. While going for a header, an opponent’s head struck her on the side of the head and knocked her on the ground. Observers on the sidelines saw how her head twisted to the opposite side prior to hitting the ground. Joelle has no independent recollection of … [Read more...] about Cervicogenic Post Concussion Disorder: A Pain In The Neck