Upper abdominal pain can be no big deal—or it can merit a trip to the ER. Here's how experts say you can tell the difference.

Mild to severe pain under the ribs on left side ... hours between meals and sleep Seek Professional help Sometimes Upper Left Abdominal Pain may signify an underlying health condition.

An abdominal mass causes visible swelling and may change the shape of the abdomen. A person with an abdominal mass may notice weight gain and symptoms such as abdominal discomfort, pain ...