Thanks for your question. There are many causes for that and important one which can leads such tongue symptoms are neuropathy, infective cause, vitamin B12, C& folate deficiency, acid-reflux. I will advise you to have these tests like serum vitamin B12 and folate levels, complete blood count, serum feritin levels, blood culture. I will also suggest you to see Internist for complete evaluation. Take multivitamins one tablet daily like Tab. centrum for one month. Use anti-septic mouth wash as well for one week.
Do ACCEPT the answer if you find it useful in this way I will be rewarded for my work and time here
Best of luck and keep in touchRegardsDr. Amir Javed