A condition marked by numbness, tingling, pain, weakness, or limited movement in the arm or hand. It is caused by an impairment of the brachial plexus, a network of nerves that affect the arm and hand.

GoldBamboo

... Brachial plexopathy is pain, decreased movement, or decreased sensation in the arm and shoulder due to a nerve problem. ...
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From the WEST  scientific·clinical

From the EAST  traditional·alternative