<prompt> True about Measles rash appearance:Along with Koplik spots1-2 days before Koplik spots1-2 days after Koplik spotsPost measles stage  <response>: RASH IN MEASLES Stas 12-24 hours after appearance of Koplik spots. Retro -auricular origin spreads to other pas of body fades in opposite direction. Takes 1 - 2 days to cover body Fever is highest and patient is sickest on day of rash. 