My young friend experienced jaw claudication, and her mother thought it must be a toothache. She sent her to the dentist, only to find that she had perfect teeth.
She had quit eating crunchy foods altogether. She would put food in the blender to make it drinkable so that she would not have to endure the pain of chewing it. I even saw her blend potato chips once.
She started losing weight, which is not good for a one-hundred pound girl. Her mother became worried and took her to the doctor, who determined that she had nerve impingement. She had to have surgery to fix it, but after that, the pain went away.