G. Arm Pain, Tingling, and Numbness
Many people experience tingling and numbness in the arm if the arm is rested over the back of a chair for several minutes or hours or by sleeping on the arm in an unusual position. This pain is caused by pressure on the nerve and normally subsides quickly once the unusual pressure has been removed. Arm pain, tingling, and numbness may occur when the nerves supplying the upper limb become affected by conditions such as arthritis of the spine in the neck region. Pressure is then exerted on the roots of the nerves as they emerge from the spine. Cervical disk disease is similar to sciatica, which produces low back and leg pain. Pain arising from sciatica usually lasts several hours and may occur over many days and may be related to posture. It is an aching pain that is only occasionally associated with chest pain. Nerve and muscle pain does not get worse during vigorous walking. This serves to differentiate the pain from angina, which can cause pain in the arm during brisk walking. Moderate to severe pain in the wrist or the arm without trauma or other precipitating cause, especially if there is no tenderness on pressure or movement of the limb, warrants medical advice.

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