Varies: It can last a month to months. I would highly recommend seeing an acupuncturist/chinese medicine practitioner. I have had more rapid recovery in patients by adding these treatments. He may also have headaches for a couple months and mood swings from the injury. He needs to stay hydrated as well and it is ok if he needs school adjustment as he will not perform well until he is better.
Answered 3/26/2013
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