A nightmare is an unpleasant, vivid, and terrifying dream that can cause fear, anxiety, or distress in the person experiencing it.
During a nightmare, the person may have feelings of imminent danger, face fearful situations, or witness disturbing events.
Nightmares can awaken the person during sleep and leave a sense of discomfort even after waking up. Often, nightmares are associated with situations of stress, anxiety, or past traumas and may reflect internal fears, worries, or conflicts.
