Further to my earlier posts on this subject, as my GP and Dentist were unable to offer a solution, I have been doing some digging myself. It appears that this can be caused by a drug Trihexyphenidyl which is one of the not so well known drugs prescribed for Parkinsons. And guess what? I take it. I have tried to come off it in the past because of some minor side effects, but only half heartedly.
I was wondering whether anyone else with a dry mouth and associated jelly like substance was also taking this drug, which I understand needs to be eliminated under supervision. I will contact my Parkinsons Nurse and be guided by her. I just hope this eliminates the problem.