What could cause a knot/cyst
behind my ear? I went to the doctor and she told
my a lymthnode, but it has got bigger and more sore to touch. I have had an extreme increase in the amount of severe headaches I have been having. I do not know if that is related. I plan on making an appointment with an ear,nose, and throat doctor tomorrow. But I am becoming more concerned with the sheer size and pain it is causing.