A neck collar, also known as a neck brace or cervical collar, is an instrument used to support the neck and spine and limit head movement after an injury. Its purpose is to prevent you from moving your head and neck until the injury is healed. Soft collars are used in the rehabilitation of whiplash and neck sprains and to provide support for chronic neck pain, especially in older people. Neck pain is a common issue today, with varied causes and numerous treatments. A cervical collar may help in many cases, or discussions may lead to further diagnoses and options. Whatever you decide to do, be sure to discuss all your concerns with your doctor.