Hello and welcome to HCM,Parotid gland
swelling and formation of lump, indicates inflammation of parotid gland which is the major salivary gland
and is called as Acute Parotitis or Infectious parotitis. it is viral or bacterial infection of salivary gland which causes blockage of salivary ducts may be due to presence of salivary stones or calculi.
It may be caused due to poor oral hygiene or severe dehydration
you can start with antibiotic Augmentin 625 mg along with aceclofenac serratiopeptidase
tablet 2 times daily for 5 days, it works against bacterial infection.
If there is abscess formation , Aspiration or drainage is needed so i suggest you to consult a ENT specialist
Maintain good oral hygiene, mouth rinsing with lukewarm saline gives soothing effect and keeps the mouth moist. drink 8 to 10 glasses of water and keep yourself hydrated.
Chewing of lozenges or chewing gums improves salivation and reduces swelling .
i hope you follow this, take care.