As you have probably found out, there are many kinds of pillows on the market right now. Various sizes, shapes, and materials (from high density foam to water) are available. But trying one after another can be very expensive.
There aren't a lot of studies comparing pillows for neck pain. But there is some evidence that using a water pillow can give pain relief and improve quality of sleep for neck pain patients. The water pillow was compared with using a regular pillow or a cervical roll. A cervical roll is placed at the base or curve of your neck. It is used along with your regular foam or feather pillow.
The firmness of the water pillow can be adjusted by the amount of water added to the pillow. The design makes it possible for the pillow to change shape. This feature means the pillow changes as you move and turn or change your sleeping position.
Providing proper support for the head and neck during sleep can reduce pain intensity and even eliminate morning headaches. The result can be daytime pain relief as well. Better sleep also makes it possible to cope more effectively with stress from chronic pain conditions.