Hi ! Good evening. I am Dr Shareef answering your query. One of the common cause of the swelling you have described is a swelling from the patotid gland and the commonest cause is a viral parotitis. If this is it, you do not have to worry - it will subside of its own may be with some anti inflammatory drugs. However, if it persists, you might have to show it to an ENT specialist/general surgeon who after a clinical examination, might go for a FNAC of the swelling to have a diagnosis and further management. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. Wishing you an early recovery. Dr Shareef.