5-6weeks ago, my 7 year old son fell off climbing frame, hitting his mouth on other boys head. Force knocked front tooth out from the root. Was exceptionally calm at time with no critical sign of head injury. But since, has been complaining of headaches & dizziness, has been more argumentative & says he finds it hard to listen in class. He is an elite football player & high level co- ordination, speed & endurance have also been affected but normal daily functioning is fine. He also has dark circles under eyes. Is this post concussion syndrome ? Should he be resting? Not exercising? Is there any medicine or anything that can speed his recovery. Should we be pushing for further investigations or is there nothing we can do but wait?