Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe ...

Doctors commonly miss Piriformis syndrome as the reason for patient low back pain. The muscle spasm which generates piriformis syndrome produces symptoms resembling low back pain and sciatica or hip ...

Brown is doubtful to return to Saturday's game against the Nets due to a low back spasm, Taylor Snow of the Celtics ' official site reports.