<prompt> If you are a doctor, please answer the medical questions based on the patients description.My son 11 yo 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?  <response>: 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:1. Torrential vomiting2. Unconsciousness or altered sensorium3. Convulsions4. Severe headache having some headache would not be unusual. You need to rush to the doctor and get a CT scan done if any of these are present. If the child is otherwise fine, he can definitely go to sleep. Applying ice would provide some relief. 