Blood Blister in Mouth – Everything You Need to Know!

Are you experiencing pain or inflammation in your mouth? A blood blister in the mouth is an uncomfortable and painful experience. An injury causes it to the inner soft tissue of the mouth. Various conditions can cause these blood blisters, but if they occur frequently or take a long time to go away, severe disease may be at play here. Blood Blisters in the  Mouth Cause discomfort and can sometimes require immediate medical attention.

It’s okay, bear with us, and understand what it is, what are the reasons/causes you got it in the first place and then how to treat them. Those red spots on tongue can be very irritating and aching. Apart from that, you might not feel like drinking or eating anything. Here, in this article, our experts have included every information on blood blisters in the mouth and how to get rid of them as well. 

What Is a Blood Blister in Mouth?

Blood Blister in Mouth


A blister is a liquid-filled sac that develops after an external portion of the skin is cut or scratched. The liquid, which is often clear, is produced by the tissue that has been hurt. A blister forms as the fluid collects, acting as a barrier to keep any more injury from reaching the already-damaged skin. 

Sometimes, blood vessels beneath the wounded skin can burst, filling the blister’s “bubble” with blood, giving rise to what is known as a “blood blister.” Most blood blisters develop with constant contact, much as clear blisters do.  

A lump or development within your mouth is a blister. The bump is laden with liquids, including blood. Blood vessels in the mouth lining are fragile, and blisters in the mouth are formed when these vessels rupture due to some injury. A blood blister develops due to the liquid leak, which causes coagulation under the skin. You will see red spots on tongue when you have blood blister in mouth!

What Are the Causes of Blood Blister in Mouth?

Blood Blister in Mouth


A number of factors can contribute to the formation of blood blisters in the mouth, including:

  • Allergic Reaction
  • Braces
  • Trauma
  • Angina bullosa haemorrhagica
  • Accidental biting of the inner lining of the cheek
  • Thrombocytopenia (Low platelet count)

Let’s understand them better in the section below!

Allergic Reaction

Some food items can induce an allergic reaction in our mouth that may start as red spots on the tongue but later take the form of blisters.


Specific sudden unpleasant reactions in the inner lining of the mouth can cause Blood Blisters in the mouth. These reactions could be sipping a hot drink, consuming hot food that burns your mouth or being pierced by a sharp food item like a potato chip.


Blood cells called platelets aid in blood clotting. A low platelet count can occur for several reasons, including pregnancy and various drugs, including some antibiotics and anticonvulsants. It can also happen if your immune system kills your platelets. 

Blood Blister in the mouth is considered one of the symptoms of this disease. In the US, approximately 30,000 new diagnoses are made annually, with 70% of the cases involving females.

Angina Bullosa Haemorrhagica

Angina bullosa haemorrhagica, or ABH, is a rare and mostly benign disorder. In this disorder, a person develops oral blisters frequently. They start as painless, tight, bloody red spots on the tongue or mouth and then quickly enlarge and burst on their own within one or two days.

In some cases, these blisters act as an underlying cause of a bigger problem lying latent. The sooner the patient can get a proper diagnosis, the better their chances get at proper healing. Aside from the blood blister in mouth causes, can also be a reason, including:

  • Oral Cancer
  • Frostbite
  • Blood thinning antibiotics
  • Blood Pressure
  • Kidney Failure
  • Diabetes
  • Ill fitted dentures
  • Deficiencies of Vitamin B12 and Vitamin C
  • Bullous pemphigoid

What Are the Symptoms of Blood Blister in Mouth?

Blood Blister in Mouth


Blood blisters frequently start bright red and gradually become purple or black over time. Mostly, people feel an ache or itching in their mouth or around the spot. In some cases, people often complain about having trouble drinking, eating, and even talking. The blood blister in the mouth causes sensations of pain and is frequently visible and typically palpable with the tongue.

Most people get only blisters, and rarely come cases of multiple blood blisters. These blisters can appear anywhere in the mouth, although they typically appear in places that have soft tissues such as the inner lining of the cheeks, tongue, or the inside of the bottom lip. These symptoms go away once the blister heals appropriately in a few days. But if the symptoms stay longer, proper medical attention is required.

How to Get Rid of Blood Blister in Mouth?

No matter what the issue is, whether a fever or blood blisters in the mouth, there’s always an effective home remedy (mom-remedy) to cure it. Specific home remedies can work wonders in eliminating the blister. Have a look at the most popular ones:

1. Cucumber

Blood Blister in Mouth


Cucumber is not only refreshing in summer but also has healing properties. Placing a slice of refrigerated cucumber on the blister for a couple of minutes helps in reducing the swelling significantly. The cooling sensation helps in relieving the pain.

 2. Ice

Blood Blister in Mouth


Placing an ice cube on the blister gently helps with the pain and dries up the blister over time. It is also a great option to apply first after you experience an injury to the inside of the mouth. Apply slight pressure while massaging the area with ice.

3. Chamomile Tea

Blood Blister in Mouth


Chamomile Tea is not just great for calming the nerves and helping you relax after a tiring day but also helps with the pain and discomfort of mouth sores. Drink lukewarm chamomile tea when you see a blister developing. Remember that the tea is not too hot or will scald the blister, causing more discomfort.

4. Witch Hazel

red spots on tongue


Witch Hazel is one of the most talked about products in the skincare industry. It helps in tightening pores and helps with anti-aging. But very few people know that it also provides a great source of relief for mouth sores and blisters.

A cotton swab dipped in witch hazel can be used to gently press the cotton swab on the blister and around the area to heal it. It will take a few minutes for the witch hazel to start acting on the blister. Keep your lips parted while the witch hazel acts on the blister.

5. Turmeric

red spots on tongue


Turmeric is an excellent antioxidant and has antibacterial properties as well. It helps in fighting the infection from the root. It is an ancient home remedy that has been used for centuries. Add a pinch of turmeric with honey to make a paste. Apply this paste to the affected area several times a day.

Some Extra Tips on Getting Rid of Blood Blisters in Your Mouth!

Avoid popping the blister or poking it. It might cause infection. In most cases, the blisters heal naturally within a week or more. Popping it will increase the chances of infection. 

  • Do not eat food items that are hot, spicy, and have acidic tendencies.
  • Plenty of over-the-counter antibiotics might help, but please be careful with taking medicines. 

Also Read: Metallic Taste In Mouth: Causes, Diagnosis, And Treatment

Consider Consulting a Doctor If:

red spots on tongue


As said in the introduction part, blood blisters can sometimes require medical attention. How would you know when to see a doctor? Here are a few circumstances under which you should consult doctor immediately: 

  • The blister has increased in size and is choking the airway making the person harder to breathe or swallow.
  • The blister has not healed naturally in a week or two.
  • The pain and discomfort are hampering your regular functioning. Your doctor could advise a calming mouthwash that has the potential to hasten recovery. 
  • The blisters keep popping up frequently and take longer to heal.
  • There are signs of apparent infection in the blister. It is either secreting pus, warm to the touch, or red spots around the blister.

How to Prevent Blood Blisters in the Mouth in the Future?

red spots on tongue


Prevention is better than cure. This saying holds for blisters as well. Have a look at these preventive measures:

  • Avoid indulging in spicy or acidic foods.
  • If the dentures give you problems, do not try to fix them yourself; instead, consult with your dentist.
  • When the blister is healing, try to eat soft food at room temperature.

Treat Those Red Spots on Your Tongue! 

With this, we will put an end to the article on blood blister in mouth. As promised, you read everything about them from what it is, its causes, symptoms and how to treat it.  Several factors can cause blood blisters in the mouth. They are often harmless. Most of them are caused by trauma and disappear fast on their own without needing treatment; keeping them at bay by being cautious of what and how you consume certain food items.

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