I have an abscess in my armpit. It has been drained and packed twice. It was the size of a golf ball, and now it (or fluid from it) are the size of an almond, as per my ultrasound this past Friday. I am thinking that this abscess is putting pressure on my brachial plexus nerves yet my surgeon thinks it could just be nerves flowing through fluid from the infection. I have stinger, burn, tight type feelings when I stretch my arm or try to lift with it. It seems logical to me to have this abscess surgically removed. Would an abscess cause these feelings?