Sore throat is usually caused by inflammation of the throat.
This is usually caused by the common cold.
Doctors will certainly prescribe antibotics for you, but I'd
suggest to take more high Vit-C fruits like watermelon, mango
and apple. They'll help lower histamine levels and boost your
immune system to combat the infection.
It's also proved to reduce the severity of cold symptoms such as
sore throat, coughs and runny nose. :)