Lots of things: There are many reasons to have left arm pain: neurologic, vascular, musculoskeletal, infectious, etc. There are lots of pain generating structures in this area.
Answered 4/7/2013
5.2k views
Many: Lung ribs humerus forearm bones shoulder vascular clots ischemia aneurysms arthritis.
Answered 4/13/2013
5.2k views
4 doctors weighed in across 2 answers
4 doctors weighed in across 2 answers
2 doctors weighed in across 2 answers
4 doctors weighed in across 2 answers
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