*Low and lower back pain* Low and lower back pain can vary from dull pain that develops gradually to sudden, sharp or persistent pain felt below the waist. Unfortunately, almost everyone, at some point during life will experience low back pain that may travel downward into the buttocks and sometimes into one or both lower extremities. The most common cause is muscle strain often related to heavy physical labor, lifting or forceful movement, bending or twisting into awkward positions, or standing in one position too long. *Other Causes of Low and Lower Back Pain* There are many different conditions that cause or contribute to low and lower back pain. Many involve nerve compression (eg, pinched nerve) that may generate pain and other symptoms. Types of spinal disorders include trauma-related and degenerative; meaning age-related. Some of these spinal problems are- *Bulging or herniated disc*. A disc may bulge outward. A herniated disc occurs when the soft interior matter escape...