Don't listen to it!
Seriously, my Mom had it. We took her to every kind of doctor, and dentists too. She was prescribed all kinds of drugs. Nothing worked.
I was going to my chiropractor, an old style, no nonsense, bone crusher, and I asked him about it. He said "Bring her in!"
When I brought her, he put her on the table, turned her head one way, then the other. I heard a loud crack, both times. He worked on her jaw bone too. He sat her up, and asked how she felt. She, in a quite surprised voice, said, "Fine!" He had her back for a few more visits, for repeat adjustments, then told her if it comes back, we'll do more. It never came back!