The most common cause of low back pain on the left side is a muscle strain ... experience a stabbing pain, or have muscle spasms, says Michael Rosner, MD, a neurosurgeon at George Washington ...

These spasms, often felt in areas like the neck, legs, or back ... and involuntary muscle contractions Certain medications can potentially trigger muscle spasms as a side effect.

If you have neck or back pain, or you’re dealing with some other condition that causes muscle spasms, your doctor might ... it is common to have side effects. Some muscle relaxants, however ...

These can include: Hemifacial spasms, also known as tic convulsif, are muscle spasms that occur on one side of the face. Hemifacial spasms occur because of damage to the seventh cranial nerve ...

Hemifacial spasm (HFS) is a neurological disorder manifested by twitching on one side of the face due to involuntary contractions of the eyelid and other facial muscles. It usually begins gradually ...