TMJ stands for Temporo Mandibular Joint, the joint where your jawbone hinges from your skull just in front of your ears. The TMJ is a tiny but very complex joint at the center of a great deal of neuromuscular activity. As a result, injury to a TMJ can cause a surprisingly wide variety of symptoms.
Dr. John Summer has written several papers on The TMJ Disorder. These articles are available from the drop down menu above under "TMJ Disorder." The articles include: