Hi and welcome to HCM. Thank you for your query.
Yes,it can be caused by GERd as there is acid reflux
which can irritate mouth mucosa and tongue. Bit of course some other lesions should be considered such as simpla aphtous stomatitis
, HPV infection
, streptococal infections or some tumours. YOu need ent and gastroenterologist examination as well. If thereare some doubts then biopsy
should be performed.
Hope I have answered your query.