Hi.. Thanks for the query.. Ass per your complain burning of a particular spot over the tongue seems to be most probably due to causes like inflammation caused due to ulcer formation, irritation caused by sharp teeth, tongue biting habit etc.. It can also be a nerve related issue.. It is less likely to be related to Tinnitus however smoking can be a culprit as it might be leading to recurring burning and irritation of tongue.. I would therefore suggest you to consult an Oral Physician and get evaluated and a thorough clinical evaluation done.. Once the exact cause is ruled out then only an appropriate treatment can be advised.. Hope this information helps.. Regards.