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 ...

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 ...

Pain in the lower ... left back occurs when the muscle fibers overstretch, leading to inflammation. In addition to pain in the lower back, symptoms may include: a limited range of motion muscle ...

According to the World Health Organization or the WHO, lower back pain affected ... weight to the opposite side when you’re ...