Hello, my 27 year old son woke up this morning with his jaw miss aligned, little pain he says, unable to clench down on food, pain increases. I asked him to open his mouth and show me his alignment, it diff out of alignment and one side of his jaw appears swollen or larger then the other. He went to bed fine and as I said he woke up like this, who do we see?

Summarized question: What causes sudden misalignment of jaws?