Muscle spasms can be both uncomfortable and inconvenient, often resulting in the inability to use the affected area for a short period. What causes muscle spasms?

A back spasm happens when the muscles in your back contract involuntarily, causing pain, stiffness, and tightness. They can happen as a result of straining certain muscle groups, muscle weakness or ...

Muscle spasms can affect anyone and occur in any area of the body, but they are usually not serious. Learn about the causes and treatments here.

When your eye twitch means something serious with seven health conditions that could be causing that annoying eyelid flutter ...

Muscle spasms are common and typically don't signal a severe health issue, but if they occur repeatedly or last for prolonged periods, you'll definitely want to find relief.

Dystonia involves involuntary muscle contractions, but you're not out of options. Discover how botulinum toxin, DBS, and ...

Smith (2-3) has returned from back spasms and picked up the loss in Sunday's game against Detroit. He allowed six runs (four earned) on five hits and an error over a third of an inning.

Stomach spasms occur when muscles in the stomach or intestines contract. We look at 10 common causes of muscles spasms, and more, here.

What Do Bladder Spasms Feel Like? Normally, the bladder gently fills with urine and you slowly become aware of the need to urinate. This feeling is your cue to start looking for a bathroom. But in ...

People who have had hysterectomies are at risk for bladder issues including bladder spasms, which usually go away on their own after a few weeks. Learn more about symptoms, treatments, and outlook.

Why Do Spasms Happen in the First Place? Stomach spasms occur due to the functional disorders of the gastrointestinal (GI) tract that are not linked to any organic, infectious, or parasitic illness.

Smith, who threw prior to Wednesday's game, is considered day-to-day. He last pitched June 22 but hasn't been placed on the injured list. CBS Sports is a registered trademark of CBS Broadcasting Inc.