Hi, welcome to healthcremagic forum,
This complaint may occur in the persons who have avery sensitive throat which is troubled by taking cold
drinks, icecreams, oily food,sweets etc.
Moreover if your son has low immunity which can be one of the causes of frequnt throat attacks.
Ask him to prevent all the things that cause this attack
, to use sips of warm water 4-5 times a day.
Consult a homoeopath, as homoeopathy has best treatment of sore throat
For any other information u can contact me -firstname.lastname@example.org.