Thanks for asking the query,
Inflammed and swollen taste buds
on tongue can be due to consumption of hot food, allergies to some food, trauma due to tongue biting, bacterail and viral infections.
A condition known as Geographic Tongue
or erythema migrans
is characterised by inflammation of taste buds and cracks on tongue surface, the condition is chronic and associated with stress, illness, hormonal changes.
I would suggest you to visit Dentist
and get the checkup done.
Go for symptomatic treatment, maintain a good oral hygiene ,
Use antiseptic mouthwash solution.
Apply oral ointment cortisone acetate
topically over the affected area.
Avoid eating of hot and spicy food stuffs.
For pain you can apply Mucopian oral ointment topicallly over the affected area.
Hope this helps out.