Pinched Nerve: Sounds like a pinched nerve in your neck. Typically that is most times what causes pain all the way down or up your arm. Alternatively, it could be a pinched nerve in arm as well like in the brachial plexus and/or nerve entrapment elsewhere. If your knee hurts it suggests the pinching in your neck is more severe than usual. I would suggest seeing a spine specialist to evaluate this further.
Answered 6/29/2014
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3 doctors weighed in across 2 answers
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