My throat hurts when i swallow and i don't know what's wrong?

GERD: In the absence of true inflammatory disease of the throat (viral or bacterial infections that need a proper diagnosis), one of the most common causes of recurrent sore throats in any age group is LPR or laryngeal-pharyngeal reflux. This was formerly known as high reflux and is the reflux of stomach acid into the upper esophagus causing sore throat, voice changes and cough. Need diagnosis.