0556 Prevalence and Incidence of Hypnagogic Hallucinations In A Longitudinal Study Of The American General Population
Sleep May 25, 2022 Maurice Ohayon, Amir Pakpour, Marie Lise Cote
About 11.7% of the general population reported hypnagogic hallucinations in the previous year, and three years later 9.3% reported them. Among those who had hallucinations at the first interview, 22.8% still had them at the second, representing 2.1% of the total sample. The three-year incidence was 5.7%. Persistent hypnagogic hallucinations were predicted by persistent pain, persistent hypersomnolence, persistent sleep paralysis, and persistent cataplexy-like symptoms. Chronicity is most strongly associated with narcolepsy-related factors.