Abdominal pain from air leakage into the abdominal cavity
Pain can be felt above collar bone in the neck and shoulder area due to air irritation just below the diaphragm. Air can leak from injured guts or trauma.
Because air is lighter than water, it bubbles up and collects just under diaphragm, which is supplied by diaphragm nerve of C3-C4 nerve fibers. This gives rise to pain in the neck and shoulder area.
This pain needs immediate medical and surgical attention.
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