Hi..
Welcome to HEALTHCARE MAGIC..
So sorry to hear about your problem and will try my level best to resolve it..
As per your complain it seems that sudden swelling of face while eating can be due to blockage in the duct of
salivary gland that can occur due to either blockage of duct opening with a foreign body while can also be due to stone formation in the duct of the salivary gland knows as salivary stones or Sialoliths..
It causes accumulation of saliva into the gland and as the saliva secretion increases during meals therefore there is sudden swelling while eating..
I would suggest you to consult an Oral Physician or an Oral Surgeon and get evaluated and a thorough clinical evaluation and investigations like cross sectional x-ray of salivary gland can help in diagnosis and treatment can be done accordingly..
In case if stone is superficial then it can be removed manually but in case of deep stones surgical removal under Sialoscopy can be done..
As of now suck tart candies and chew sugarfree chewing gums as it can lead to
flushing off the stones with flow of saliva.
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.