Less common, pain in the area can also occur as a result of more severe problems such as a heart attack, cancer, or kidney ...

Muscle injuries, nerve pain, and kidney inflammation can all cause lower left back pain. Learn about these causes and more.

Acid reflux is when some of the acid or food in your stomach washes back ... causes, many associated with the digestive system. Epigastric pain has a range of causes, some more severe than others.