Millions of Americans suffer from chronic facial and neck pain as well as severe, recurring headaches. In some cases, this pain is due to Temporomandibular Disorder, also known as TMD. Your temporomandibular joints, or TMJs, connect your lower jawbone to your skull. These joints get a lot of use throughout the day as you speak, chew, swallow, and yawn. Pain in and around these joints can be unpleasant and may even restrict movement.