Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern.
As per your complain and presentation of symptoms it looks like swollen bumps at the back of the tongue are due to enlarged circumvallate papillae..
It can be due to
sinus infection leading to
post nasal drip that is causing inflammation in throat and as the area of back o tongue lies close to throat therefore there can be inflammation of circumvallate papillae..
Nothing to worry as the swelling will resolve once the infection subside..
As of now do warm saline gargles and also take anti-inflammatory painkillers for relief..
For sinus infection consult an ENT Physician and get evaluated and he can advise you a course of antibiotics, anti-inflammatory painkiller like Ibuprofen, decongestants like Pseudoephadrine, do saline
nasal irrigation, steam inhalation and use a humidifier in your room..
You can also be advised decongestant nasal sprays containing
Xylometazoline or
Oxymetazoline..
Avoid spicy and chilled foods..
Do warm compresses around nostrils..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora.