Swallowing difficulty. Is this curable?

I am having swallowing difficulty and some neck pain! Firstly I got tonsils then suddenly I developed difficulty swallowing food that I never had this issue before,I am suffering from this issue from 2 months FOUR ENT SAW ME , GAVE MEDICINES NOT MUCH RELIEF,MY EVERY TESTS DONE,BLOOD WORK CAME NORMAL, ENDOSCOPY REVEALED NOTHING JUST ESOPHAGITIS GRADE A AND I DON'T HAVE ANYTHING! BEFORE I HAD LOWER BACK PAIN FROM 1 YEAR AND I THINK THERE'S SOME CONNECTION BETWEEN TWO,...I never had any issue like this before,I suddenly developed difficulty swallowing please help me suggest some medicine for difficulty swallowing 🙏🙏🙏🙏🙏🙏🙏🙏🙏...MY GASTROENTEROLOGIST SAID YOU MAY HAVE NERVE RELATED PROBLEM CAUSING THIS PROBLEM ! IF THIS IS TRUE THEN PLEASE LET ME KNOW IS THIS CURABLE?? I AM STRESSED UP TO NEXT LEVEL! MY AGE IS 18 YEARS