A member asked:

What causes sharp pain under right breast under rib cage when running?

A doctor has provided 1 answer
Dr. Richard Zimon answered

Specializes in Internal Medicine

Pain under the: rib cage may be due to a collection of gas in the large intestine which curves under the rib cage on both sides of the abdomen...the "shaking" of running forces normal bowel gases to "collect" in those curves (eg on the left and more common side this is called "splenic flexure syndrome" This diagnosis is only made when other causes are ruled out so an in person visit to your PCP is indicated. Z

Answered 1/23/2021

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I have swelling under left breast on top of rib cage what could cause it?

3 doctors weighed in across 2 answers