How do i know if i am cleared from a concussion? i recently had a low humming in my ear and sensitive hearing. it's gone now, does this mean i'm in the clear or should i still be cautious?

Clear by your doc: I would recommend you see your doctor to get final clearance.This is dependent on having all symptoms gone and a normal physical exam. It also depends on how the concussion happened and when. To return to school, use computers and phones, and eventually return to sports, there is a gradual process for returning, looking for any symptoms returning along the way. It is generally best to be cautious.