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Abnormal Timing Of Pattern Reversal Visual Evoked Potentials C4072950

Published: July 22, 2026Updated: August 26, 2026

An atypical result on a test measuring how the brain responds to alternating visual patterns. Used to check visual pathway function.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 26, 2026Editorial policy

Key facts at a glance

ICD-10
G43.909
ICD-11
8A00.0
Body system
neurologic
Severity
mild
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Delayed pattern reversal VEP

(neurologic)

Generalized symptoms

(neurologic)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Prolonged N75-P100 interval

(neurologic)

Asymmetric pattern reversal VEP

(neurologic)

Disorganized pattern reversal waveform

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Medication Comparisons

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy