I've had a white coated tongue for over 2 years, coating is mostly central and worse at back. It's not an overly thick coating. Along with this I have a pea sized solid white area near front of tongue and a 1cm long rectangular solid red area towards back but near side.
Some other symptoms:
- skin feels warm touch especially from noon onwards and usually neck, ears, chest areas.
- minor post nasal drip which comes and goes
Otherwise feel pretty good. Could this be intestinal candasis?