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An 11-year-old boy’s painful chronic lockjaw may have been triggered by conversion disorder, a mental health condition that causes physical symptoms, according to a case report published on April 7 in ...

Opening a wooden clothespin inside the mouth may be a hack for improving trismus in patients, according to a technical note published on January 6 in the British Journal of Oral and Maxillofacial ...

Q: I had trouble opening my mouth wide when I was getting my teeth cleaned, and the hygienist said it could be TMJ. But my sister, who is a chiropractor, says she thinks it’s a muscle spasm. What is ...

Soon after Wyatt Scott was born in June 2013, doctors realized that he couldn’t open his mouth — a very rare condition called congenital trismus. A year and a half later, the cause is still unknown.