Back Pain can be described as acute or chronic. Acute back pain is commonly described as sharp and severe; it tends to come on suddenly but also improve with time and short-term conservative treatment, such as medication, exercise, physical therapy or rest. Chronic back pain is typically over 12 weeks in duration and is commonly described as a deep, aching, dull or burning pain. Chronic pain generally arises over time as the body ages and as the back is subjected to the wear and tear of daily living. Chronic pain can also be approached with conservative, nonoperative measures, though it tends to last a long time and may not respond as well to conservative care.