The concentration of electrolytes in the body is controlled by a variety of hormones, most of which are manufactured in the kidney and the adrenal glands. Sensors in specialized kidney cells monitor the amount of sodium, potassium, and water in the bloodstream.
Fill a plastic bag with ice and wrap it in a towel. Apply to the neck, between the shoulders, or at the base of the head for 20 minutes. Apply a hot application, such as a hot shower or bath, a heating pad, hot water bottle, or hot towel, for 20 minutes. Repeat this for thrice a day until you get complete relief from the stiff neck. Note: you can use artificial cold pack or bag of frozen peas.
Cervical / Neck collars are commonly used by patients who had a surgical intervention of the cervical spine to immobilize the neck. It is also used for the treatment against neck pain, which can be caused by an acute trauma or chronic neck pain. For example after a whiplash injury, the neck collar will be used for both immobilization and to reduce pain.