What is left upper abdominal pain?
A person with left upper abdominal pain has discomfort in the left, upper part of the abdomen. This includes abdominal pain that is in the left part of the abdomen, "under the ribcage." Common causes of left upper abdominal pain include gastritis, peptic ulcer disease, constipation, irritable bowel syndrome, kidney infection, or an injury to the spleen.

What are the symptoms of left upper abdominal pain?
Symptoms that can occur with left upper abdominal pain include abdominal swelling, excessive gas, fever, nausea, vomiting, diarrhea, constipation, and loss of appetite. Left upper abdominal pain may travel to the groin or the back. In some cases, left upper abdominal pain may worsen during a deep breath.

How does the doctor treat left upper abdominal pain?
Treatment for left upper abdominal pain depends on the underlying cause. Serious causes of left upper abdominal pain may require antibiotics or surgery.