How to support a neck injury when laying down?

Depends. This depends on the type of structures injured. Some people with a disc herniation may sleep sitting up in a recliner but if just arthritic or muscular in nature, then with just a small pillow supporting your head while on your side or on your back.

Related Questions

How to best support a neck injury while laying down?

If just talking . About a strain or muscular injury, a small flat pillow should be enough. Sometimes, a soft cervical collar for a short period of time can help as well. These are more for comfort. Read more...