Hello,
Dry mouth or Xerostomia can cause oral yeast infection leading to a thick white coating on tongue. It commonly resolves with antifungal medicines but the underlying cause that is dry mouth also needs to be managed.
You should first of all take care of dry mouth and for this you should chew sugar free chewing gums, suck lemon drops and drink plenty of water. Oral lubricants like Oralgel can help in maintaining lubrication. Use specialised mouthwash like Biotene.
For
fungal infection, you can gargle with Nystatin mouthwash, suck
Clotrimazole lozenges and if the infection still persist, you can take
oral antifungal medicine like Fluconazole.
For red spots on face, it can be due to clogged pores, allergy, bacterial infection etcetera. So get it clinically checked by a
Dermatologist once and treatment can be done according to the cause. For now, apply
Clindamycin ointment over it, do cool compresses and apply only aloevera gel on face.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Honey Arora