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The symptoms you have described are the features of chronic pharyngitis
and the swollen taste bud like things are the enlarged lymphoid follicles present over the back of the tongue.
Chronic pharyngitis could be due to recurrent sinus infection
and acid reflux
from the stomach into the throat.
Treatment is aimed at controlling the cause. Drink plenty of warm water, do steam inhalation 3-4 times a day and use povidone iodine
throat spray. I doubt any yeast infection.
Dr. Naveen Kumar N.
ENT and Head & Neck Surgeon