What could cause visual hallucinations when waking up or falling asleep?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Visual hallucinations that occur while falling asleep (hypnagogic) or waking up (hypnopompic) are often part of normal sleep transitions and are experienced by many healthy people. However, they can sometimes signal an underlying medical condition—such as narcolepsy, sleep paralysis, migraine, Parkinson's disease, or Charles Bonnet syndrome—or be a side effect of certain medications.

Because the causes range from harmless to more serious, understanding your specific pattern of symptoms matters. If you're experiencing these episodes and want clarity on what might be behind them, taking a free, instant, and private symptom check can help you identify possible causes and decide whether it's worth speaking with a doctor. It only takes a few minutes and could save you hours of uncertainty.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn what causes visual hallucinations during sleep transitions Find out if sleep-transition hallucinations need care Discover if these hallucinations could signal something serious See OTC options for sleep-related hallucination symptoms Find a doctor for sleep and vision issues Understand home remedies for sleep-transition hallucinations Check if your symptoms need medical attention

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Explanation

Visual hallucinations that occur when waking up or falling asleep are often related to normal changes in the brain during sleep. These are called hypnagogic (when falling asleep) and hypnopompic (when waking up) hallucinations. They are usually harmless and happen because the brain is transitioning between sleep and wakefulness.

However, sometimes these hallucinations can be linked to other causes:

Medical Conditions: Some neurological conditions, like Parkinson's disease or certain types of dementia, can cause visual hallucinations.
Medications: Certain drugs, especially those affecting the brain, can lead to hallucinations as a side effect.
Mental Health Issues: Conditions such as schizophrenia or severe depression might also result in hallucinations.

If hallucinations are frequent or disturbing, it may be important to talk to a healthcare professional. To help identify potential underlying causes of your symptoms, you can start with a free AI symptom checker to better understand what might be happening.

(References)

Manford M, & Andermann F. (1998). Complex visual hallucinations. Clinical and .... Brain : a journal of neurology, 9798740.
Pelak VS, & Liu GT. (2004). Visual Hallucinations. Current treatment options in neurology, 14664772.
Weil RS, & Lees AJ. (2021). Visual hallucinations. Practical neurology, 33986117.

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