is very active) and they wake up the subject in a state of anguish and intense agitation, disturbing his rest.
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This phenomenon is part of parasomnia (non-pathological disturbances of sleep) and is quite common in preschool children, but it can also affect adults. Frequent nightmares can interfere with sleep, mood and / or normal daytime functioning.
Nightmares can have a clear connection with what happens while awake. Dreams related to anxiety and stress, particularly post-traumatic stress disorder, can involve flashbacks or images directly related to traumatic events. However, not all nightmares have an easily identifiable relationship to daily life. Nightmares can have bizarre or disconcerting contents that are hardly attributable to specific circumstances.