Thrush may be associated with some type of immune disorder in which the immune system isn't functioning properly. It can also be a side effect of antibiotics which kill bacteria but doesn't harm fungus, which then can grow more easily with less competition from bacteria.
The last time I was at the dentist and he didn't see anything. Is thrush common in healthy individuals or is there some underlying condition I need to look into ? I just notice it when my mouth is dry and it's almost like sloughed skin. Everything you read about thrush is that's it's creamy so that why I was wondering what thrush feels like when touched.
It may be thrush or it may be food particles/plaque building up in the area due to the dry mouth and lack of saliva to wash it out. Have you seen your dentist or primary care physician about it? If it is thrush, a course of anti-fungals should take care of it.