Pressure on the nerves as they exit the neck causes pain in the arm. This is known by a number of terms such as brachial neuralgia or cervical radiculopathy. In everyday terms, this is pinched nerves. Many people are familiar with a lumbar spine disc prolapse causing sciatica. This is pressure on the nerves leaving the low back pinching the sciatic nerve. The same process can occur in the neck. In the low back, the problem is generally a dis...