Tingling is a common symptom that is usually accompanied by numbness. It is generally associated with disorders affecting the nerve roots. Many conditions can lead to tingling and numbness, including sciatica, arthritis, disc conditions (such as herniated or bulged discs), and tendonitis.
For example, carpal tunnel syndrome involves the compression of the median nerve, which runs from the forearm into the hand. This disorder often leads to tingling and numbness in the hand and fingers.
Because tingling and/or numbness can be caused by any number of conditions, treatment centers on addressing the cause of the symptoms.