I, too, have been suffering from a constant sore throat
and phlegm for
a few years now. Been to a number of internists, ENT's, allergists. Had CT scans, allergy tests, throat cultures, etc. Was put on a number of antibiotics, acid reflux meds, antihistamines, steroid sprays and more. No one could diagnose me, so they tried everything I recently went to a gastroenterologist, even though acid reflux meds had not worked in the past.