SLEEP-ONSET INSOMNIA By N., Sam M.S. - 1 when a person has trouble going to sleep. Also called onset insomnia. See insomnia; primary insomnia. SLEEP-ONSET INSOMNIA: "Joe had sleep onset insomnia but once he was asleep he stayed asleep." Related Psychology Terms DREAM-STATE (D-STATE, REM- STATE) PMDD: Can It Be Cured? LEARNING DURING SLEEP EPILEPSY (Symptoms and Types) Dissociative Identity Disorder BREATHING-RELATED SLEEP DISORDER HYPERMNESIA ENERGIZER (Antidepressant) BRAIN WAVES (Electroencephalogram, EEG) KORSAKOFF’S SYNDROME (Amne- sic-Confabulatory Syndrome) Cite this page: N., Sam M.S., "SLEEP-ONSET INSOMNIA," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/sleep-onset-insomnia/ (accessed August 17, 2022).