Imagine waking up drained instead of refreshed, not because of a lack of sleep, but due to being trapped in relentless, vivid dreams. For many experiencing these “grand dreams,” the repercussions can greatly disrupt daily life.

“These intense experiences linger in my mind, exhausting me and causing constant fatigue,” shares Madame R, a 38-year-old grand dreamer.

Madame R is one of four grand dreamers studied across two centers in France. Despite the scientific explanations for her condition, the phenomenon has been observed for over 20 years. Researchers advocate for recognizing these sleep disturbances as distinct disorders, as supported by detailed case studies from Pierre Geoffroy from the University of Paris.

In her analysis, Madame R noted she has always had extraordinary dreams, a condition that intensified after the birth of her second child. Other subjects included Monsieur W, a 74-year-old whose dreams blur the line between reality and imagination.

Another participant, Monsieur D, 58, reported experiencing excessive dreaming twice weekly for four years. Madame W, 40, stated she cannot recall a moment without dreams, expressing, “It feels like my brain never shuts down at night.”

Dreams can manifest during any sleep stage; however, Geoffroy asserts that due to the narrative-driven nature of these dreams, they likely occur predominantly during the rapid eye movement (REM) stage.

Excessive dreaming could signify extended REM sleep. Polysomnography tests conducted on three of the four dreamers revealed typical REM stages, or slightly reduced sleep duration.

Geoffroy remarked that the polysomnography findings were “not particularly remarkable.” Yet, results indicated increased REM density and microarousals—frequent disruptions that fragment REM sleep. These micro-awakenings could enhance dream recall, leading individuals to feel as if they’ve been dreaming all night.

If a person’s brain consistently remembers their dreams as vivid experiences, they may awaken feeling unrefreshed, despite seemingly adequate sleep data. Ivana Rosenzweig at King’s College London stated, “This doesn’t imply dreaming occurs every second; rather, it questions why the sleep brain fails to let dreams fade, blending them into waking life.”

Researchers also explored if grand dreams correlate with poor mental health, which could contribute to sleep issues. While all participants completed psychiatric assessments, three exhibited signs of depression or anxiety, yet managing these conditions did not alleviate excessive dreaming. Jeffrey pointed out that grand dreams may represent a separate disorder.

Dr. Rosenzweig emphasized that the study “highlights a clinically significant phenomenon that many sleep specialists recognize but is inadequately represented in current diagnostic frameworks.” However, she noted that more extensive research is essential before classifying grand dreams as a unique sleep disorder.

Francesca Siclari from the Netherlands Institute for Neuroscience also advocates for further investigation, highlighting, “One major challenge is to determine if excessive dreaming stems from a singular mechanism or represents symptomatic elements across various sleep and psychiatric disorders.”

Rosenzweig and her team anticipate that upcoming research may clarify why some grand dreamers struggle to differentiate between real-life occurrences and dream scenarios. Their ongoing investigations suggest that grand dreams extend beyond atypical sleep disorders, posing fundamental questions regarding the brain’s perception of reality.