Question: how long do white spots on tonsils last with mono?
Answer: Severe sore throat, which is almost always present and lasts about 6-10 days. The throat may be very red, with white spots or pus on the tonsils. This can initially look similar to strep throat. Fever of 100-103° F (37.8-39.4° C), which is usually worst during the first week and may worsen at night.