Back pain only on your lower left side may be a sign of an infection, muscle strain, kidney stones, or stress fracture.

Whether it’s a dull, underlying ache in your spine or a piercing stab, chronic back pain affects roughly 1 in 4 Americans. UC San Francisco’s Prasad Shirvalkar, MD, Ph.D, neurologist and pain medicine ...

As Aroldis Chapman — flanked by a trainer — walked gingerly off the mound in the middle of the eighth inning Sunday against the Dodgers, it was easy to imagine a series of dominoes for the Red Sox.

KANSAS CITY, Mo — Bobby Witt Jr. left Friday night’s game against the Minnesota Twins in the seventh inning due to low back spasms. The shortstop made two defensive plays, on ground balls, in the top ...

The Mariners placed Raley on the 10-day injured list Wednesday with back spasms. Raley had been dealing with the injury for a few days, and after he made limited improvement, the Mariners decided to ...

Frances Tiafoe has been forced to retire from the Cincinnati Open after struggling with back spasms during his fourth round match against Holger Rune. He reached the final losing to Jannik Sinner last ...

Whether it's a dull, underlying ache in your spine or a piercing stab, chronic back pain affects roughly one in four Americans. UC San Francisco's Prasad Shirvalkar, MD, Ph.D., neurologist and pain ...