What is a hypnopompic hallucination
If experienced while falling asleep
If experienced while awakening
After head trauma
After convulsion
Enquire whether the hallucinations occurred during wakefulness, or were they hypnagogic (occurring while going to sleep) and/or hypnopompic (occurring while getting up from sleep) hallucinations. this is a type of hallucination that presents in NARCOLEPSY , the major cause of narcolepsy is HYPOCRETIN DEFICIENCY a type of sleep disorder where there is hypnogogic hallucinations hypnopompic hallucinations sleep paralysis hypersomnia cataplexy( sudden loss of muscle tone due to emotional stimulus) Ref: a sho textbook of psychiatry, Niraj Ahuja,7th edition, pg no.13
Symptoms and signs in psychiatry and classification