A member asked:

When yawned i felt a tremendous pain under my left breast and every time i took a deep breath it really hurt but went away after 10mins. what is this?

A doctor has provided 1 answer

Intercostal muscle: The small intercostal muscles between the ribs and sternoclicomastoid muscles probably went into spasm at the time you yawned, causing a contraction to the ribs while you were inhaling

Answered 6/6/2015

3.7k views

Thank

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