I'm using thyroid tablet 50 mg for 2 years. I was feel like throat burning for 2 months. Consulted gastroenterology and he did endoscopy then he said sliding hiatus hernia. Then i Consulted ent specialist also  he said vocal problem. Now burning sensation reduced. Again i went for checkup, ent said looks like hashimoto thyroid. What is it mean. Is it any serious? Sometimes throat feel like paining.