<s>[INST] Have blisters on the back of my tongue. Are very hard to see. Have to pull tongue down to see. Had burning sensation on right side of my tongue and also same area on throat when I eat. I believe they have been around for maybe a month but not positive. Looks like pictures of swollen circumvallate papillae. Is that what it is? And what should I do. [/INST] Hello, Thank you for consulting with Chat Doctor. There can be many reasons for this burning sensation on the tongue, burning sensation can be because of an ulcer known as authors ulcer present on tongue or throat, can be because of any kind of allergy of throat or an autoimmune disease known as lichen plans. And the blister which you are mentioning can be just a circumvallated papillae. But to get all these confirm you have to visit a good dentist for proper examination and investigations if necessary. Hope it will help you. </s>