A team of Brazilian researchers found evidence that patients with a diagnosed temporomandibular disorder (TMD) may also have cervical dysfunction that may possibly contribute to their TMD symptoms. In this study, twenty TMD patients and 20 healthy controls underwent a series of tests that measured pain, disability, and sensitivity to hot and cold at several body sites. They found the TMD patients were significantly more likely to report neck pain and disability and also more likely to have abnormal sensitivity to pain and cold sensations in their cervical region than those in the control group. The authors of the study believe their findings point to a relationship between TMD and the neck.
Journal of Oral Rehabilitation, February 2016