Depends: The structures under the collarbone include the brachial plexus (nerves to your arm/hand) and blood vessels to the arm; muscles the pectoralis mm, infraclavicularis and the apex of the lung. Issues with any type of pain include localizing a specific area, activities that bother you ; how the pain effects your life. If you have the problem everyday or sx are constant or persistent, see ur pcp.
Answered 10/24/2017
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