Swelling as per picture seems some thing pathological on tongue with a demarcated ulceration, might be a obstruction in salivary gland or a ulceration due bowel disorder, please visit to near by dentist and do a proper check up and take necessary medication. Dont go hot spice and any oral habits .......................it need proper attention.

Hi..it is a swelling caused due to obstruction in salivary gland duct. Its called ranula. It doesn't go with medicines. It has to be surgically removed under local anesthesia. Regards

It is looking like a ranula. Due ro salovary gland obstruction.You need to see oral and maxillofacial surgeon.

it might be abcess.. have to do xray. may b bone loss ,,or pocket formation in gum.. visit your dentist soon ,,dont apply hot water,,

Dear User, the swelling can be because of infected tooth, a developing cyst or because of a blocked salivary gland duct. visit a dentist immediately....

You need to see an Oral and Maxillofacial Surgeon ASAP. A biopsy of this swelling is needed to establish diagnosis. Treatment depends upon nature of swelling. Please visit an oral surgeon ASAP.