Upper stomach pain can mean gas, indigestion, or stomach viruses. More severe causes can include appendicitis, gallstones, bowel obstruction, or peptic ulcers.

Pain articles from across Nature Portfolio Pain is an unpleasant sensory and emotional experience. Acute nociceptive pain is induced by noxious stimuli, and is often a result of an intense or ...

Pain in the upper abdominal area, usually under the ribs, is the most common symptom of both acute and chronic pancreatitis. Nausea and vomiting are also common. Learn about other symptoms and ...

Retrobulbar hemorrhage is an uncommon, vision-threatening complication of orbit and eyelid surgery. Incidence, risk factors, diagnosis, and treatment are discussed.