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pain in the lumbar region of the back, an old popular term for lower back pain. It includes various different conditions caused by factors such as injury, back strain, arthritis, abuse of the back muscles (such as from poor posture, a sagging mattress, or ill-fitting shoes), or any of a number of other disorders.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.