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Sign

Koplik spots

Small pale lesions on the inner cheek that can appear during the early phase of measles.

Found
Buccal mucosa
Normal
No spots are present on the buccal mucosa.
Abnormal
Small white or bluish-white spots on an erythematous base.
Suggests
Measles
Named after
Henry Koplik

Koplik spots are enanthematic lesions, meaning they occur on the oral mucosa rather than the skin. They are seen on the buccal mucosa in measles and may be present before the characteristic skin rash. Their appearance can help identify measles during its early clinical phase.

Card id: koplik-spots

Sources

  • Measles (Rubeola). CDC Yellow Book, 2026, https://www.cdc.gov/yellow-book/hcp/travel-associated-infections-diseases/measles-rubeola.html

Reviewed