<s>[INST] Hi..my 90 year old mother has had a problem with slouching of her gums ahd lips inside where she feels little strings of skin membrane which she cannot cut with her teeth and it is very bothersome feeling. It is progressing and she asks the primary care who has no idea, she has gone to dentists who say it's dry mouth, but I and my brother have been diagnosed with dry mouth but do not have this feeling. My mother's labs are ok. A problem stated when she was taking a bl pressure mediation for years (Lisinopril) and then all of the sudden she got an anaphyastic reaction from it and was taken off [/INST] Hi..Thanks for the query..It looks like gum disease and if the gums are sloughing off then it can be trench mouth like symptoms..So it is better to consult a gum specialist or Periodontist and get her examined..Treatment can only be decided once a clinical examination is done..Hope this helps..Regards.. </s>