Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain a lump under the chin can be due to a clogged duct of Submental
salivary gland which is caused by formation of crystalline stones in the duct of Salivary Glands formed by the minerals present in saliva..
This leads to backflow of saliva into the gland and cause swelling of gland..
In case of small stones taking sour candies or sugar free chewing gums can help in increasing saliva flow and stones get flushed out of the duct..
In case of large stones surgical removal under a Sialoscope can help in removing the stones..
One other cause for swelling under the chin can be a swollen lymh node which can be due to some infection in the head and neck region and antibiotics is the treatment of choice in this case..
You should consult an Oral Physician and get evaluated and after proper checkup and diagnosis treatment can be done..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora..