I am not a physician, however, I have had the same sensation
in my throat, as well as gastritis, and the sensation
in my throat has been attributed to gastric reflux (acid from the stomach going up into the esophagus). I took Pariet (rabeprazole) and it helped with the throat lump and gastritis. (However, I stopped taking it because I felt it slowed down my digestion and I was having a lot of abdominal distension - and still am (I am frustrated that has not yet been diagnosed).