Back pain left side
Need musculoskeletal exam. Two major structures that commonly cause this-1) iliolumbar ligament or 2)attachment of major extensor muscle ( quadratus lumborum) at sacrum ( enthesiopathies)3) myotonic point in overused muscle.
Usually localized. May respond massage
, manipulation or needling. Common cause is rotating lower back during lift or abnormal position while working. Physical therapists