<s>[INST] Hi, since yesterday I have had a very bitter taste at the back of my mouth mainly when I eat, I then noticed today around 8 or 10 red lumps at the back of my tongue...I have had a look online and it seems I have enlarged circumvallate papillae, is there anywhere I can get rid of this? Thanks! [/INST] Hi dear, As per your query you have bumps at the back of tongue and experiencing bitter taste. The symptoms you mention in query are pointing towards a condition in which circumvallate papillae. There can be many reasons for such condition like hot and spicy food, acid reflux, infection, canker sore vitamin B12 and folic acid deficiency. They can also indicate some serious underlying condition, which is rare. Usually they go away by their own without any treatment. I would suggest you to avoid hot and spicy food, do warm saline gargle, maintain proper oral hygiene and start taking multivitamin supplement. If condition doesn't get better in few days then consult oral pathologist for proper diagnosis and treatment. Doctor may prescribe antibiotics along with anti-inflammatory. Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>