Initially I experienced boils with pus in my right armpit. It started in 2001.In the year 2008 I had to undergone an operation as I developed a large lump filled with pus with severe pain. Doctor diagnosed it to be abscess. But the problem did not end. From 2008 to 2016 I experienced several other boils in the right armpit. Now I occasionally experience a abscess like swelling in the right armpit with severe pain but it doesn't drain any pus and subsides within a couple of days. Recently I discovered that the problem arises when I raise my right hand in a posture greater than 90 degree angle instead of its proper resting position or stretch it just by the side of the right ear. And the problem doesn't appear if I put my right hand parallel to my body. I also noticed a duct like swelling just beneath the cut mark of the last operation. Please suggest.