Hi Dear,
Welcome to HCM.
Understanding your concern.
Thanks for your query .The symptoms you describe in query are clea indication of
canker sore of tongue.The probable causes of canker sore are stress(very common),injury to the tissue due to bite or any dental appliances,citrus or acidic fruits ,viral infection (
herpes simplex) and deficiency of folic acid and vitamin B 12.
Usually canker sores go away by there own in few days ,But if they become painful ,large and puss coming out of then.I would suggest you to visit
dentist ,who may prescribe you topical or oral(acyclovir)
antiviral medication and vitamin B12 and folic acid supplements .
For now what you can do is avoid acidic or citrus fruits,take oover the counter painkillers like
paracetamol or ibuprofen( if you are not allergic to it )and apply lidocain gel or clove oil to the sore for pain relief .
Hope your concern has been resolved.
Get Well Soon.
Best Wishes,
Dr. Harry Maheshwari