There are several different kinds of back pain. The pain can affect the upper or lower back, although lower back pain is more common. It can range from a dull, persistent ache to a sudden stabbing pain. The pain can come on suddenly and last for just a few days (called acute pain) or for months (chronic pain). It can be present all the time, or it can come and go. Back pain can be due to problems with the muscles, nerves, bones, joints or other structures in the spine.
