Source:http://linkedlifedata.com/resource/umls/id/C0004604
MSH: Acute or chronic pain located in the posterior regions of the THORAX; LUMBOSACRAL REGION; or the adjacent regions.,CSP: acute or chronic pain located in the posterior regions of the thorax, lumbosacral region, or the adjacent regions.,MEDLINEPLUS: <p>If you've ever groaned, "Oh, my aching back!", you are not alone. Back pain is one of the most common medical problems, affecting 8 out of 10 people at some point during their lives. Back pain can range from a dull, constant ache to a sudden, sharp pain. Acute back pain comes on suddenly and usually lasts from a few days to a few weeks. Back pain is called chronic if it lasts for more than three months.</p><p>Most back pain goes away on its own, though it may take awhile. Taking over-the-counter pain relievers and resting can help. However, staying in bed for more than 1 or 2 days can make it worse. </p><p>If your back pain is severe or doesn't improve after three days, you should call your health care provider. You should also get medical attentio