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What causes dull left arm pain that comes and goes?

Left arm pain can be a sign of a heart attack or angina. A blood clot in the arm can cause the same symptoms and is an ...
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7 reasons you're experiencing pain in your left arm and when it's a sign of a medical emergency

Pain in your left arm can be due to a number of causes, not just a heart attack. Other causes like a muscle sprain, pinched nerve, or angina could be at fault. Check your other symptoms to determine ...