Hypnagogic hallucinations are seen in
High-Yield Explanation
NarcolepsyThe classic tetrad of symptoms is:i. Sleep attacks (most common): ii. Cataplexy: iii. Hypnagogic hallucinations: iv. Sleep paralysis (least common): Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no. 138