The left upper quadrant (LUQ) is the left upper abdominal region, starting from the chest's middle line to the left side of the ribcage and down to the level of the navel (belly button). Pain in this ...

A range of health conditions may cause middle back pain on the left side including a sprain, kidney stones, osteoporosis, or pancreatitis. The National Institutes of Health (NIH) is the source of the ...

Spleen pain may feel like discomfort in the upper left side of the abdomen. It can occur for a range of reasons, including inflammation or injury. The treatment will depend on the underlying cause.