Do your nightmares leave you wondering whether you are suppressing serious problems?
Here's a simple explanation from the American Family Physician to help you figure that out.
Dreams can occur at any point of the sleep cycle, and even frequent bad dreams don't indicate psychiatric or psychological problems. That applies to children, who may have night terrors, as much as to adults. Just relax and go back to sleep.
But if you have the same bad dream over and over, you might think about getting professional help. It's one of the common symptoms of post-traumatic stress disorder.