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  1. Nightmare - Wikipedia

    A nightmare, also known as a bad dream, [1] is an unpleasant dream that can cause a strong emotional response from the mind, typically fear but also despair, anxiety, disgust or sadness. The dream may …

  2. Why We Have Nightmares (And How to Prevent Them)

    May 2, 2024 · It’s normal to occasionally have a nightmare or bad dream, but for some people, they recur frequently, disrupting sleep and negatively impacting their waking life as well.

  3. Nightmare disorder - Symptoms and causes - Mayo Clinic

    Jun 5, 2021 · A nightmare is a disturbing dream associated with negative feelings, such as anxiety or fear that awakens you. Nightmares are common in children but can happen at any age.

  4. 7 Reasons You’re Having Nightmares

    May 22, 2024 · What causes nightmares? “Most people have a random nightmare here or there, and you may be more susceptible to them after dealing with stress or watching a scary movie,” Dr. Tiani …

  5. NIGHTMARE Definition & Meaning - Merriam-Webster

    It was not until the 16th century that the word nightmare came to mean "a frightening dream." This meaning probably came from the belief that such dreams were caused by evil spirits.

  6. Adult Nightmares: Causes and Treatments - WebMD

    Apr 30, 2025 · When you wake up terrified from a disturbing nightmare, you might think you're the only adult who has them. After all, aren't adults supposed to outgrow nightmares?

  7. Nightmares: Causes, Bad Dreams Signs, Warnings & Treatment

    Talking about the nightmare during the day. Comforting and reassuring the child. Encouraging the child to go back to sleep in their bed. Avoiding bright lights in the bedroom, and using a night light, which …

  8. Nightmare | Definition, Causes, Prevention, & Facts | Britannica

    nightmare, disturbing dream that provokes a strong negative emotional reaction. Nightmares differ from other dreams in that they typically cause the sleeper to awaken because of emotional distress. An …

  9. Nightmares - Psychology Today

    Apr 26, 2022 · A nightmare, if one occurs at all, usually takes place in the later hours of REM, or rapid eye movement, sleep. A dreamer often awakens with a solid general recollection of the imagery and...

  10. Why Do I Have Nightmares? A Scientist's Guide to Nightmare

    6 days ago · Wondering "why do I have nightmares?" A scientist explains the common causes and meanings behind your bad dreams. Learn to interpret your nightmares and improve your sleep.