brain, spinal cord, and nerve disorders
Parasomnias
Nightmares
Nightmares are vivid, frightening dreams, followed by sudden awakening. Children are more likely to have nightmares than adults. Nightmares occur during rapid eye movement (REM) sleep. Nightmares are more likely to occur when people are under stress, have a fever, are excessively tired, or have consumed alcohol. Treatment of nightmares, if necessary, focuses on any underlying problem. 