Hypnagogic hallucinations

Definition

Hypnagogic hallucinations are vivid, often frightening sensory experiences that occur at the transition from wakefulness to sleep. They can involve visual, auditory, or tactile sensations.

5 Must Know Facts For Your Next Test

1. Hypnagogic hallucinations are commonly associated with narcolepsy but can also occur in healthy individuals.
2. CNS stimulants like amphetamines may exacerbate hypnagogic hallucinations due to their impact on sleep architecture.
3. They differ from hypnopompic hallucinations, which occur upon waking up.
4. Nonstimulant medications like certain antidepressants (e.g., SSRIs) might be used to manage symptoms related to hypnagogic hallucinations in patients with sleep disorders.
5. Patients experiencing frequent hypnagogic hallucinations should be evaluated for underlying conditions such as narcolepsy or other sleep disorders.

Review Questions

• What is the primary difference between hypnagogic and hypnopompic hallucinations?
• How can CNS stimulants affect hypnagogic hallucinations?
• Which types of medications might be used to manage hypnagogic hallucinations in patients with sleep disorders?

Related terms

Narcolepsy:

A chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep.

Hypnopompic Hallucination: Sensory experiences occurring upon waking up from sleep.

CNS Stimulants: Medications that increase brain activity, often used to treat ADHD and narcolepsy.