Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain Circumvallate Papillae are present on the back one third of tongue and are arranged in a typical V shaped pattern and are large papillae so slightly raised appearance is normal but in case if they are red and inflamed and swollen they are not normal and can occur due to a number of common causes like burning with hot foods and liquids, inflammation caused due to chemical injury like using concentrated solutions of mouthwash, allergic reaction to medicines, acid reflux,oral infections like Thrush, throat infection, post nasal drip etc.. You should consult an Oral Physician and get evaluated and treatment of underlying cause can relieve.. As of now you can do warm saline gargles, soda bicarb gargles, suck ice pops and do cold water rinses.. You can also avoid hot and spicy food and take a soft diet.. Drink plenty of water and maintain a good oral hygiene.. Hope this information helps.. Thanks and regards. Dr. Honey Nandwani Arora.