I have TMJ from years and years of clenching and grinding. I also have a lump on one side just in front of my ear. I've never been sure they are linked.... I've always thought the lump was a shoddy node. I first noticed the lump probably almost 10 years ago. Once in a while it gets a little bigger (allergies, if I have a cold, sometimes with no clear reason). After all this time I've kind of assumed that if it was bad it certainly would have killed me by now!!!