Blood blisters in the mouth usually result from accidental injury. Most respond to home treatment, such as a saltwater gargle, oil pulling with coconut oil, or over-the-counter (OTC) medication.

There are several types of blisters, including friction, burn, and blood blisters. Read more about the various types below. Friction blisters are primarily caused by the repetitive action of ...

Most blisters are filled with clear fluid but may be filled with blood or pus if they become infected. Blisters can appear ...