Had brain injury 3years ago&have post concussion syndrome. Recently been having dreams every night that I get another concussion. Why? It’s upsetting.

Unknown. No one really knows definitively how to understand dreams, although dream interpretation can be meaningful. Scientifically, it is not a sign of the future. There is no hard and fast answer about what a dream means. It may indicate fears that you have or unresolved concerns about your past experience. But you can always tell yourself that it is a dream, not a reality.