Blood blisters in mouth: Causes, Treatment and Home remedies.

Just as in case of a blood blister on the breast, it is natural and in fact necessary to be concerned when a blood blister appears in the mouth. It can be a source of discomfort, a symptom of an underlying health condition and a potential cause of infection.

How do you get blood blisters, first of all? Blood blisters develop when a source of trauma forces the upper layers of the skin to separate, creating a vacuum in the process. This vacuum gets filled with blister fluid and blood leaking from damaged blood vessels. A tight and red bubble-like bump results in the end.

In most cases, blood blisters in the mouth will disappear even without treatment. They mostly appear on the inside of the cheeks, on the roof of the mouth and sometimes on the gums.

Since a blood blister in the mouth is not a disease, it cannot be cured medically. However, treatment options are available for how to get rid and prevent such blisters.

What causes a blood blister in the mouth

As to what causes blisters in the mouth, several factors are responsible. They include:

Physical injury

The largest percentage of blisters in the mouth occurs after a physical injury has been sustained in the mouth. The most common phenomenon is when the inside of the lips or cheeks gets caught up between your teeth. Injuries can also occur when biting or chewing. They can also be caused by hot foods and drinks.


Food counts for many cases of blisters in the mouth. Acidic foods such as citrus fruits are good examples. Putting too much salt or too many spices in food can also be responsible. Food preservatives have also accounted for blisters in the mouth. Food or medication allergies have also been identified as potential causes.

Reduced platelets

Platelets are blood components responsible for blood clotting during injuries. The clotting prevents excessive bleeding. When in low counts, common symptoms include blood blisters forming in the mouth. It is a fatal condition and should be addressed by a doctor. Low platelets count is also indicated by appearance of petechiae or purpura rash.

Prescription and abused drugs

Certain medications cause allergic reactions and can result in blood blisters in the mouth. Abused drugs such as alcohol and smoking encourage oral ulcers and mouth blisters.

Poor nutrition

Vitamins B12 and C deficiency can trigger blood blisters inside the mouth. It is worse if other deficiencies in vitamins and minerals are also occurring.

Health conditions and diseases

The most common disease associated with a blood blister in the mouth is Angina Bullosa Haemorrhagica. It is a disease mostly affecting older people. Often, it causes a blood blister in the mouth, cheek or under the tongue.  The blister is short-lived, and usually it breaks open shortly after formation.

Celiac disease causes recurrent appearance of blood blisters in the mouth. The blisters are in fact mouth sores. Patients suffering from this disease lack sufficient ability to absorb minerals and nutrients. They also are allergic to gluten or wheat.

Oral herpes causes many red blisters to appear inside the mouth and on the lips. Its other symptoms include fever and muscle aches. A blood blister on the penile head can also develop in this case.

People with weak immune systems can also develop a disease known as Bullos pemphigoid. Its symptoms include red blisters in the mouth.

Immune compromising conditions such as diabetes can cause blisters in the mouth.

If a blood blister inside the mouth is to appear and persist, it can be a sign of oral cancer. This is especially true if the blister is painless and keeps growing in size.

Sometimes, a red blister can develop on the gums after a dental surgery or tooth removal. They can also develop in children when teething.

How to get rid of a blood blister in the mouth

Blood blisters in the mouth usually heal naturally even without treatment. Below are tips that can help when it comes to how to get rid of them:

Learn the probable cause

The first thing to do should be finding the probable causes. This will help you know what to avoid or what to include in your lifestyle plans. For example, nutritional deficiency can be treated with supplements. Alcohol abuse and smoking can be reduced or stopped entirely.

Consider pain medications

Blood blisters due to physical injuries can be managed with pain medications. This will buy you time to allow the blisters to heal naturally.

Get medical treatment

If the blisters are due to health conditions and diseases, it is best that medical help be sought. This also goes for blisters that have broken open to form sores. Such sores can lead to bacterial or viral infections. Your doctor may also prescribe mouth washes, topical steroids or special toothpastes.

How to treat a blood blister inside the mouth at home

Try ice treatment

Ice treatment is a very effective treatment for blood blisters. It makes blood vessels constrict, thus preventing further leaking of blood into the blisters. It also helps reduce pain and inflammation. All you need are some ice cubes, a plastic bag to wrap them in and a piece of cloth. Place the piece of cloth wrapping the plastic bag on the blister for about 10 minutes.

Maintain oral hygiene

Blood blisters are usually covered by a tight outer covering. They also are mostly painful. Avoid any source of pressure, friction or any form of trauma on the blisters. This includes toothbrushes, spicy foods, hot drinks and so on. You can consider mouthwashes instead of toothpastes, for example.

Don’t pop or squeeze the blisters

Popping blood blisters in the mouth in the hopes of draining them is a bad idea. It will usually result in infected blisters. Also, keep from squeezing them in the attempt to reduce inflammation.

Home remedies to get rid of a blood blister in the mouth

Home remedies can prove very effective options for how to treat a blood blister inside the mouth yourself. Below are some commonly used home remedies:

Witch hazel

Extracts from witch hazel will help keep the blisters dry. This encourages quicker healing as well as discouraging bacterial infections. Witch hazel is also a good how to get rid of blood blisters on the face home remedy.

Aloe Vera

When applied directly on the blister, aloe Vera gel will keep out infections, reduce pain and also reduce inflammation.

Tea tree oil

This home remedy is popular for being an antiseptic as well as helping reduce inflammations. It is a good option when treating a blood blister on the roof of the mouth. This is because it only requires to be diluted with warm water and swirled in the mouth. Tea tree oil can also be used to get rid of a blood blister on the foot.

Epsom salt

Just like tea tree oil, Epsom salt is a good option for treating a blood blister on the roof of mouth. A little amount added to water and swirled in the mouth will see the blisters pop on their own soon enough.


Cucumbers work by strengthen the tissue that connects skin layers. It can help keep blood blisters in the mouth from forming frequently and from swelling.


A little turmeric powder can be added to rose water and applied on the blisters. A bit of honey into the solution will make this a better home remedy.

When to get treatment for a blood blister inside the mouth

Many searches related to can blood blisters get infected are run on search engines every day. In fact, infected blood blisters are the greatest causes of concern.

Blood blisters will always heal naturally, if they are not symptoms of chronic diseases such as cancer. If the blisters get infected however, many complications set in.

On average, a blister inside the mouth should not take more than three weeks to heal. This is as long as it is not being disturbed and hasn’t been manually popped.

If you experience a blood blister or a related lesion in the mouth that takes longer than three weeks to heal, consult your doctor. This also goes for blisters that are very painful and discomforting. Blisters which keep reappearing are likely going to be signs of underlying health conditions. See your doctor for medical diagnosis in that case.

Note that blood blisters in mouth are not the same as oral ulcers, also referred to as canker sores. Canker sores are redder near the edges and are usually caused by acidic or spicy foods.