Do you habitually eating sweets or always expose in pollution? That are the common cause of sore throats.
That's not really something that can be diagnosed over the Internet; there are numerous things that can cause recurring sore throat, from acid reflux to allergies or worse. That's what doctors are for.
A sore throat could be caused by sinus drainage...if that IS the case...taking one Benedryl a night can lower your chances of infection and blow your nose when it runs. If this doesn't help...please see a physician.
When next you visit your primary care clinician or your dentist, ask her/him to describe the word pathogen. You will have a better understanding how good and bad flora co-exist in your systemic and internal organs. Everything begins with an atom and progresses to organs. Tweet me softly @cs33ca
Haynes Darlington (M.Sc. PharmD) CCPE
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them