What describes Koplik spots?

Koplik spots are indeed best described as red papules with white centers found on the buccal mucosa, typically opposite the molars. These spots are considered a classic sign of measles (rubeola) and appear during the prodromal phase of the illness, which occurs just before the characteristic measles rash develops. The presence of these spots can help healthcare providers in diagnosing measles, particularly when combined with other clinical signs and symptoms such as fever and conjunctivitis. Their specific appearance is key, as they often go unnoticed but provide important diagnostic clues in the context of a patient’s illness.