I have a red spot on the roof of my mouth with a dull white center. Every few days it fills up with fluid and then becomes painful and pops. It then fills up again over 2-3 days. My mouth also has a horrible tinny taste in my mouth. I think I could potentially have a sinus infection as I also have blood in my mucus.
Hello, thank you for consulting with Chat Doctor. The type of red spot you are mentioning, it looks that it is a sinus opening which has occurred because of tooth infection or gum infection. Actually when an upper tooth is infected there is formation of abscess and in chronic conditions it Chat Doctor.