In measles, when do the Koplik's spots appear?
In measles ,a prodromal illness,1-3 days before the rash,occurs ,with upper respiratory symptoms ,conjunctivitis , & the presence of the pathognomonic Koplik's spots,small white spots surrounded by erythema on the buccal mucosa. Reference: Harrison20th edition pg 879
On the day that fever occurs
On the day that rashes appear
1 -3 days before the rashes appear
1-2 days before the fever occurs
Infection