Pins & needles: The most common cause of pins and needles sensation in the back of the head is a pinched nerve in the neck, usually secondary to significant arthritis or disk degeneration. If the pain is constant, it is understandable that he might want to bang his head just to distract himself from a worse pain, but this isn't the best way to deal with it. Have him see a doctor. Treatments are available.
Answered 1/23/2013
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A doctor has provided 1 answer
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