Do you have nightmares?

I never have nightmares(that I remember), and I couldn't tell you when, if ever, I had one as a adult.


However, I had them often as a child, and would wake sometimes yelling for my mom.
A few days ago, I ran across a reference to childhood nightmares, which stated "many children experience frightening nightmares at a very early age, and many of these nightmares revolve around the threat of death. In the most primordial of these bad dreams, the child is thrust into a “chasing” scenario in which a malevolent antagonist is aggressively and relentlessly pursuing the young dreamer, who flees in terror."
http://www.beacon.org/catalogs/sp05/Bulkeley-ch1.pdf

My recurring childhood nightmare was of running the bases of a baseball field in the dark, while being pursued by a terrifying entity of light.
About six months ago, I saw part of the old 1954 movie "Twenty Thousand Leagues Under the Sea" and recalled seeing that as a child. Suddenly it clicked that the movie had in part triggered my nightmares, specifically the parts of the movie where the Nautilus was pursuing and sinking ships. Probably elements of school life also played a part too though.