Get those jaws moving, people.

The exact cause of temporomandibular joint (TMJ) disorders is largely unknown. Some cases begin after an injury, while others may have more to do with a mix of joint structure, genetics, and stress.

If you’ve ever experienced a stress headache, it’s possible you might be suffering with TMJ – a painful condition that the likes of Zoe Ball, Iggy Azalea and Dermot O’Leary have publicly discussed ...