Thanks for asking the query,
Swollen taste buds can be because of consumption of hot food , allergy
to some food products , trauma from tongue biting or braces .
Get checkup done look for any sharp points in braces which can irritate the tongue and get it corrected . Get complete mouth scaling done .
Maintain a good oral hygiene , use antiseptic mouthwash gargles twice daily .
nodes in neck and armpit can be because of bacterial or viral infection, mouthsores , tooth infections skin infections , ear infections .
Get complete checkup done . If fever cough
is present get it treated , the condition will resolve once illness will go away.
Drink plenty of water and keep yourself hydrated.
Hope this helps out .