Nightmare
A nightmare is a dream that can cause a strong negative emotional response from the sleeper, typically fear and/or horror. The dream may contain situations of danger, discomfort, psychological or physical terror. Sufferers usually awaken in a state of distress and may be unable to return to sleep for a prolonged period of time. Nightmares can have physical causes such as sleeping in an uncomfortable or awkward position, having a fever, or psychological causes such as stress and anxiety. Eating before bed, which triggers an increase in the body's metabolism and brain activity, is a potential stimulus for nightmares.
Nightmare was also the title to a 1964 British film directed by Freddie Francis and produced by Hammer Film Productions.
(See Also: Dream)
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