Explanation : It possible your old scar from respiratory illness you may be had many years ago, or even not from respiratory problems at all, but some muscle spasm. Please, do not exercise heavily.
Answered 9/16/2016
978 views
? Muscles/ribs: Some muscle pull or sprain on the chest wall, something external not in your lungs. If progressive, or there are other symptoms see your doctor, wish you wellness
Answered 9/17/2016
976 views
4 doctors weighed in across 2 answers
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