Your sore throat comes with drooling, or you have trouble swallowing or breathing. This might mean your epiglottis, the structure that overhangs the opening to your throat, is inflamed. You could also have an abscess in the back of your throat. You need to get treated ASAP for these two rare conditions.
You have a sore throat and pain that moves to your ear. This may be a sign of a more serious problem.