Jaw pain and the condition known as temporo-mandibular joint syndrome or TMJ (T-M-J) can cause painful tension headaches and reduce mobility in the jaw.

Shoulder injuries can be extremely painful and may require extensive time to heal. These types of injuries are often overuse injuries from sports such as tennis and baseball in which the joint is repeatedly worked.

The shoulder is the most commonly overused and dislocated joint in the body, so it's no surprise that shoulder pain is a frequent complaint. However, if you experience sudden pain in your shoulder that's accompanied by chest pain, nausea, or shortness of breath, you should go to the emergency room for a medical exam immediately.

Whiplash is a common term for a neck injury that occurs when the head is thrown forward and then quickly thrown back again, most often during a car accident.