How To Get Rid of Blood Blisters In Mouth?

Accidentally biting your cheek may cause a sore developing inside. What if you wake up to find blood in it after a few hours? Well, don’t fret about it if your mouth roof or insides of your cheek has a blood blister. They start off scary but resolve as time passes.

Red blood filled blister inside the mouth is very common than you think. Having it is uncomfortable, looks off, and is painful. The leading cause behind the formation of this soft tissue is trauma. However, if this condition is persistent, it may be something else, like an infection. Let’s have a closer look.

A Blood Blister In Mouth

Blood filled blister is a circular bump that grows in your mouth. The blisters appear when the vessel present under the skin bursts, recollects, and clots under the skin layer.

Oral Blood Blisters – Causes

  • Injury because of cheek biting
  • Anxiety issues
  • Allergic reaction
  • Angina bullosa hemorrhagica
  • Braces
  • Ill-fitted dentures

Angina Bullosa Hemorrhagica (ABH)

ABH or angina bullosa hemorrhagica is a condition that shows up with a dark sort of a purple looking blister filled with blood in the mouth. They may develop at any time and stay for a few days before rupturing. The healing process is swift, and after burst, fortunately, they don’t leave a scar behind.

Causes – ABH

  • Iron insufficiency
  • Vitamin B12 deficiency
  • Celiac disease
  • Herpes
  • Arthritis
  • Skin rash
  • Allergies
  • Hormonal changes
  • Medications, for example, NSAIDs or steroids
  • Toothpaste
  • Smoking cigarette
  • Eating hard food
  • Local anesthesia
  • Diabetes
  • Dental procedure


A blood blister in your oral cavity does not require external help since it either bursts or shrinks on its own. If the blister was painful initially, popping might help relieve pain.

Ensure not to let external factors pop the fluid blister in your mouth. A sudden burst will result in a viable lesion prone to bacterial manifestation. Also, do not use alcohol-based mouthwashes. Ice and OTC pain medications work well for discomfort.

Are Blood Blisters And Mouth Sores the Same Thing?

Fever blisters, blood blisters, and canker sores all of them grow inside the mouth. They are alike but not exactly the same; here are some of the differences mentioned below:

  • A canker sore is a red ulcer with a white or yellow thin lining. On the contrary, mouth blood blisters seem dark blue or purple.
  • Fever blisters are felt before coming via a tingling sensation; later, that area forms a blister. However, a blood blister will appear randomly in the mouth.

Managing blood-filled blisters inside the mouth with the following home remedies:

  • Apply ice on it.
  • Put a cucumber slice for swelling reduction.
  • Use witch hazel cream; it works well for pain reduction in dry oral blisters.
  • Chamomile tea helps in easing mouth sores with its soothing properties.


The blisters may appear often but do not pop around 2 weeks, ask your doctor or dentist immediately about the situation. Our dentists in Katy, TX, at Katy Cypress Oral Surgery and Implant Center are here for you. Call 281 667 0607 to set up an appointment.

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