What causes a dull pain under the left upper abdominal rib cage?

Oct 11, 2022 Source: Cainiu Health
Disease description:

I've had a mild pain under the left upper side of my abdomen beneath the ribcage for the past two days. I'd like to know what might be causing it.

Doctor's answer (1)
Dr. Jin Zhongkui
A dull pain under the left upper abdominal ribs may result from trauma such as rib fractures or contusions caused by external impact. It could also be due to gastrointestinal diseases such as duodenal ulcers or gastric ulcers. If the intercostal nerves beneath the left upper abdominal ribs are injured, causing intercostal neuralgia, it typically leads to localized dull pain, which may worsen with physical activity.