Do blood blister marks go away?

We all have had blisters at one point of our life. You may be used to seeing blisters after an injury or feeling discomfort when having one. Blisters are often seen with clear fluid filled in. While in most cases we would think blisters are nothing of a concern, you may be worried to see if there is blood or also known as blood blister. In this DoctorOnCall’s article, we will learn about blood blisters.

To understand what blood blisters, what exactly is a blister? A blister is a small bubble of fluid that is typically clear. It is formed under the top layer of the skin. Blister is formed when there is repeated friction stretching the skin, creating a tear between the skin layers. This tear is then filled with fluid. This fluid is the unfiltered plasma that is rich in proteins resulting from leaky or injured blood vessels. Blood blister specifically refers to a blister that is filled with blood apart from the plasma.

Blood blisters may look red similar to blood or darker in colour such as purple or black. Blood blisters are common on hands, fingers, feet and toes. Blood blisters in mouth can be a concern and we will talk about this later in this article. Blood blisters usually start with light red colour and as time goes by it will turn darker to the oxidation process of the blood itself. Imagine eating an apple and leaving it in the air. You will see the white coloured apple flesh becomes darker, right?

Blood blisters may be painful or cause discomfort but it should not be to the extent of causing problems in managing daily life routine. At times, blood blisters can be itchy. Blood blisters are generally harmless. The question of do blood blister marks go away? Yes, it does go away within days or weeks. It is important to not pick at the blisters as it can lead to the blood blisters taking more time to heal. Similar to common blister, a blood blister protects the skin underneath. Thus, if there is a break in the skin, it will further increase risk for scar on top of infection.

Even though it is true that most blood blisters are considered harmless, a specific disease known as angina bullosa haemorrhagica (ABH) may be a concern. It is a blood blister that occurs in the mouth. It can appear anywhere in the mouth but is likely to be found on the soft palate. ABH is common to be seen in middle-aged and the elderly.  It is an uncommon oral disorder that appears spontaneously in the mouth. It can last for days before bursting but most commonly starts over a few minutes and bursts. It can burst on its own or when a person is eating. Bursting can leave a shallow ulcer but will heal on its own within a week. This blood blister does not leave scars. Most patients will have no symptoms but some may feel moderate pain or some burning sensation.

Why can ABH be a concern? It is because studies have shown that ABH may be found in renal failure patients. ABH that occurs frequently or in other word recurrences at regular intervals is typically linked with some disease or certain medications. Factors or event that can lead to recurrence ABH is trauma to the mouth, dental procedure, endoscopy, local anaesthesia, eating hot food, usage of steroids and health conditions such as diabetes mellitus, hypertension, rheumatoid arthritis, high uric acid level and gastrointestinal disturbances. Those who have a blood blister in mouth might need to get checked by a doctor as there is concern for other health conditions. Frequent blood blisters in the mouth should also warrant a visit to a dental professional or physician.

Due to the fact that most blood blisters are harmless and heal on their own, no specific treatments are needed. Patients may ask help from a health professional for the pain. Using anti-inflammatory medication can help alleviate symptoms. If a blister is infected, doctors may prescribe antibiotics. Antibacterial mouthwash can be used to ease discomfort from blood blisters in the mouth. Blood blisters can be wrapped in bandage or gauze to protect the area.

Blood blisters may be prevented although not completely. Wearing comfortable and well-fitting shoes or gloves should lessen the risk for blisters. Keeping the feet dry and wearing thick socks can reduce chances of infection towards the blister. Eating a soft diet can ease symptoms of blood blisters in the mouth. Due to the fact that there are many causes of blood blisters in the mouth, it is best to get checked by a doctor or dentist if it happens frequently.

It can be concluded that blood blisters in general are a harmless condition. What makes a blood blister slightly different from a general blister is the fluid inside the pocket is blood. Treatment is not needed in most cases as there are no symptoms but some may need medical treatment when there is a symptom.