Why have i had pins and needles in left arm and hand for last 7 weeks?
`pins and needles` (paresthesia) is a sensation of uncomfortable tingling or prickling, usually felt in the hands or feet. The affected area is sometimes said to have `fallen asleep.` A common cause is leaning or lying awkwardly on a limb, which either presses against the nerves or reduces the blood supply to the local area. Changing position quickly restores normal feeling. Any numbness is soon replaced by a tingling and prickling sensation, as the nerves start sending messages again to the brain and spinal cord. In some cases, rocking the head from side to side will painlessly remove the “pins and needles” sensation in less than a minute. A tingly hand or arm is often the result of compression in the bundle of nerves in the neck. Loosening the neck muscles releases the pressure. Compressed nerves lower in the body govern the feet, and standing up and walking around will typically relieve the sensation. An arm that has “fallen asleep” may also be “awoken” more quickly by clenching and