Unusual location: The lower left back is an unusual location to have pain from a myocardial infarction (heart attack). However, that doesn't mean that something is not wrong - pain is usually a warning sign. If you've not had any trauma, then I suppose muscle strains or back injury is out the question. The colon (colitis) or kidneys (ureter infection/stone) or even AAA (aneurysm) can cause it. Talk to your doctor.
Answered 10/23/2017
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