Numbness and tingling in the limbs can indicate a serious medical condition such as a stroke, so if these symptoms suddenly develop, you should have a medical exam immediately. Numbness and tingling can be caused by a pinched nerve, poor circulation, or overuse injuries, like carpal tunnel syndrome. Numbness and tingling in the fingers, thumb, and palm usually indicate carpal tunnel syndrome. This condition is caused by repetitive motions such as typing, and may require a special brace or even corrective surgery. Pinched nerves usually occur in the spine when a disc slips out of place and puts pressure on a nerve, but pain and numbness can occur throughout the legs, feet, and back. If you have poor circulation, you may develop tingling in the fingers or toes, especially in extremely cold temperatures. All of these conditions can be treated with chiropractic adjustments to realign joints and relieve pressure on nerves and muscles. Poor circulation can be also be treated with heat therapy, massage, and nutritional therapy. Numbness and tingling usually indicates a problem with nerves, so it's important to seek treatment immediately. If left untreated, conditions such as pinched nerves and carpal tunnel syndrome can lead to irreparable nerve damage, loss of sensation, and debilitation of the limbs.