Answer: Yes nightmares have a sever impact on me.
Explanation: When I have a nightmare about being chased though the woods, it makes me feel uneasy to being alone anywhere after that. Or when something bad happened like horrible to me done by someone else (nightmare). Then anyone I see, I then make a "stay away vibe" because I scared. Even if its family or friends. I stopped hugging my family cause of some of my nightmares.
Hope this helps any