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What Causes Dull Left Arm Pain That Comes and Goes?
A dull feeling in your left arm could be from overuse or strain. Learn what causes pain on this part of the arm here and ...
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What To Know and Do About Deltoid Pain
The rotator cuff is a group of tendons and muscles that cover the top of the humerus (a bone in your upper arm) and attach to the shoulder. A rotator cuff tear, which occurs when one of the ...