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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. …

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

    May 2, 2024 · Knowing the differences between bad dreams, nightmares, and nightmare disorder is a first step to addressing the causes of nightmares, starting appropriate treatment, and …

  3. 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,” …

  4. Adult Nightmares: Causes and Treatments - WebMD

    May 1, 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?

  5. 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.

  6. NIGHTMARE Definition & Meaning - Merriam-Webster

    Because it was believed to come in the night, it later became known in Middle English as a nightmare. It was not until the 16th century that the word nightmare came to mean "a …

  7. 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 …

  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 …

  9. NIGHTMARE | English meaning - Cambridge Dictionary

    NIGHTMARE definition: 1. a very upsetting or frightening dream: 2. an extremely unpleasant event or experience or…. Learn more.

  10. What are nightmares? gative storyline, usually involving threat to life or safety. Upon awakening from a nightmare, the sleeper typically quickly realizes they were dreaming, remem