Regarding Koplik spots in measles, when do they appear relative to the rash?

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Multiple Choice

Regarding Koplik spots in measles, when do they appear relative to the rash?

Explanation:
Measles often starts with prodromal symptoms before the rash, and Koplik spots are an early diagnostic clue. These small bluish-white spots on the buccal mucosa (inside the cheek, often opposite the molars) appear about one to two days before the characteristic rash. Their appearance signals the impending rash and helps with early recognition and isolation to prevent spread. After the rash begins, Koplik spots typically fade and are not usually seen later in the illness.

Measles often starts with prodromal symptoms before the rash, and Koplik spots are an early diagnostic clue. These small bluish-white spots on the buccal mucosa (inside the cheek, often opposite the molars) appear about one to two days before the characteristic rash. Their appearance signals the impending rash and helps with early recognition and isolation to prevent spread. After the rash begins, Koplik spots typically fade and are not usually seen later in the illness.

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