Hi.. Thanks for the query.. As per your complain Burning of tongue while eating spicy food which is progressively worsening is due to a condition known as Burning Mouth Syndrome in which there is burning sensation inside mouth and can also be associated with a scalded feeling and can also experience numbing sensation.. It can occur due to a number of causes like nutritional deficiency of iron and vitamin B12, dry mouth or xerostomia, stress, acid reflux, side effects of medicines etc.. I would suggest you to consult an Oral Physician and get evaluated and a thorough clinical examination and investigations like blood tests can be advised.. Treatment of underlying cause will resolve the symptoms.. As of now to get relieved you can start gargling with a numbing mouthwash containing Lignocaine.. Take anti inflammatory painkiller like Ibuprofen.. Avoid spicy foods and take a soft bland diet.. Suck ice pops.. Take a multivitamin tablet daily.. Hope this helps.. Regards.