Due to the amount of nerves passing through the neck, compression can result in many forms of bodily malfunctions. The pain may be related to the position of your head while in bed or sitting. Constant pain can cause you to sweat profusely as you are stressed, and this can lead to dehydration and nausea. So , everything has a knock on effect. Psychological aspects are also brought into play and can make you more anxious. This is a very simplistic example that can lead a doctor to suspect other causative factors such as cholecystitis. But he must eliminate this as a possibility before looking elsewhere.