Posts tagged “sinus”

I have a small blister on my gum which I have had for about 2 years.
When I apply a pressure to it via my finger the liquid inside it escapes possibly through one of my teeth & I get an unpleasant taste in the area of the tooth.
I do not get any pain in my gum or teeth.
What is causing this blister to keep coming up & how can I stop it happening?
Regards