Even though they're not based on real stimuli, these hallucinations can be auditory, visual, and tactile, often linked to recent experiences from the previous day.

Horsnell has other common signs of narcolepsy as well, including nightmares and visual and tactile hypnagogic hallucinations, ...

Cataplexy is the least common symptom of these, and many people with narcolepsy never experience it. Narcolepsy with cataplexy is called narcolepsy type 1, while narcolepsy without cataplexy is ...