Hello there ,
Thanks for writing your query,
Inflammation of the parotid tissue known as parotitis
It may be caused due to several reasons such as :
caused by viral infection,
formation of Stone in the salivary duct,
infection of the tooth spreading to the parotid gland
exact diagnosis can be made only after clinical examination and evaluation by taking radiographs.
i would suggest you to get and OPG radiograph done which will help in diagnosis and accordingly treatment can be planned .
consult an oral surgeon and get the examination done.
i would suggest you to start with a antibiotic and analgesic
course consulting your dentist
, which helps in subsiding the swelling and relives pain.
i hope this helps ,