A teenager is seen in the clinic due to a mild respiratory infection. The nurse observes Koplik's spots on the oral mucosa. Next, the nurse inspects


• Koplik's spots are a prodromal sign of rubeola (measles) that appear 2 to 3 days before the measles rash. They are small, clustered, white lesions on the oral mucosa near the back molars.

• The nurse would next check the skin for signs of maculopapular rash to support the diagnosis.

• Koplik's spots are often not seen because they may disappear within one day, but when seen they allow prompt and early treatment.

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