Thanks for posting your query.
There may be possibility of gastroesophageal reflux disease
(GERD), causing burning sensation along with persistent sore throat
You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up.
You should also go for endoscopy to rule out ulcers in food pipe (esophagus
You should take proton pump
inhibitors along with prokinetics for relief of your symptoms.
Avoid tomatoes, citrus fruits, onion, garlic and oily and spicy food.
Take soft bland diet for coming few months.
Dr. Mayank Bhargava