My son (11 y/o) fell in the shower and hit his forehead. He has a knot about the size of a small orange. Hes able to follow my finger with his eyes, speak, walk and answer any question such as dates, names, addresses, etc.  Ive been icing the knot and gave him one alive and some Tylenol. Is he fine to go to sleep?  And, how else can I determine if hes got a concussion?
A size of a small orange is actually quite big for even an 11-year-old. In any case, the signs of concussion or head injury would be