Middle back pain on your left side that lasts more than a week should be diagnosed by your healthcare provider. Treatments ...

Muscle or spine damage and nerve damage, including sciatica, can also cause pain. Lower left side back pain in females can be caused by pregnancy-related changes, fibromyalgia, and other conditions.

Yoga can help relieve sciatica pain and even prevent it from returning, as it helps improve spinal alignment and release tension. Here are the poses that help the most.