<s>[INST] hi, i notice that for the pass 2 weeks i have a couple of red bumps on my tongue, mostly in the back of my tongue and it feel like it going in my throw, it dont hurt and i eat normally, and on the right side i have a bad metalic taste when or when im not eating and the tip of my tongue tickle, i dont drink or smoke, but i havent take care of my mouth like i should before this all start. I try to rinse it with listerine but it burn [/INST] Thanks for using Chat Doctor. Read your query. The red bumps which you have described on the back of your tongue suggests enlarged circumvallate papillae which usually occurs due to few factors including hot and spicy food, gastro esophageal reflux and some infection. You should not worry as it is a not a condition which is dangerous. Maintain a good oral hygiene, reduce hot and spicy food. Listerine can cause occasional burning sensation, use saline water gargling. If still worried consult an oral surgeon and have it checked. Hope this was helpful. Thanks and regards. </s>