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Blisters on the body: Causes and treatment

by Alivia Nyhan
Published: Last Updated on

At some point in your life, you have seen a vesicle appear in some part of your body that contains a liquid inside, this is what is known as a blister, and it can be not very pleasant depending on the cause that gives rise to its appearance.

This has been evidenced when you have put on a shoe that has generated friction or chafing. You have also been able to suffer it due to a sunburn or the use of a chemical that will create an allergic reaction on your skin, giving rise to the appearance of a blister.

Multiple causes generate the appearance of this type of skin lesion; then, in this FastlyHealarticle, you will learn everything related to blisters on the body: why they come out and how to cure them.

What is a blister

Blisters are lesions that appear on the skin in the form of bubbles and are found below it or in the outermost layers. The body produces the fluid located inside the blister to respond to the injury suffered.

The blisters appear to protect the body from the skin that has suffered some damage and, in this way, stimulate its regeneration and protection from possible infections.

If you wonder what the fluid in the blisters is, it is the lymphatic fluid or the lymph that contains nutrients that allow the creation of a new layer of healthy skin, in addition to white blood cells that have a large number of lymphocytes, responsible for fighting bacteria and foreign agents.

These injuries frequently appear in areas such as the hands, feet, and different body parts.

Why do blisters appear on the body?

The appearance of blisters depends on different causes. Below you will learn about each of them:


A blister on the body from the sun is a lesion of the skin tissue due to excessive exposure to the sun’s rays. It is usually accompanied by other symptoms such as:

  • Pain.
  • Ardor.
  • General discomfort.

If this is your case, you may be interested in: Natural remedies to protect the skin from the sun.

Contact with materials that are at very high temperatures

They are the most common causes of burns that generate the appearance of blisters due to contact with substances or materials at high temperatures and acids or chemicals.

Other symptoms, in addition to the appearance of blisters on the body, are:

  • Swelling of the skin
  • Inflammation of the skin.
  • Body pain.


Exposure to low temperatures triggers the appearance of blisters on sensitive skin, which can put the person suffering from it at risk.

Fiction like rubbing shoes, socks, gloves

The use of some of these objects causes blisters on the body due to friction or rubbing in areas such as hands and feet.

Herpes zoster

The herpes zoster is a disease caused by the varicella virus, which affects the skin, causing inflammation, pain, and blistering type injuries in some regions, often in adults.

See more information in Home remedies for shingles.

Fungal infections

The feet are the place in the body most prone to fungal injuries due to humidity and constant abrasion from footwear, especially if the proper precautions are not taken.

Often, yeast infections of the feet also have symptoms such as:

  • Irritation to the feet.
  • Swelling in the feet.
  • Infections as a result of excess heat and sweating of the feet.

More information on Types of foot fungus – with photos.

Contact dermatitis caused by poison ivy

The contact of poison ivy with the skin generates an allergic reaction, the product of oil that this plant contains in leaves, stems, and roots. When in contact with this substance, the skin of allergic people reacts with an allergy generating:

  • Irritation to the skin.
  • Inflammation at the contact site.
  • Blisters on the body.
  • Pain.

Atopic dermatitis

Atopic dermatitis and skin exposure to irritating substances or allergens in sensitive individuals to these substances affect the skin, giving rise to blisters in the body, as well as irritation and inflammation.

Some of the irritants are:

  • Paintings.
  • Acidic foods.
  • Astringent substances.
  • Lana.
  • Soaps
  • Perfumes.

See more information in the article Home remedies for atopic dermatitis.

Dermatitis herpetiform

This autoimmune disease causes red, inflamed, and itchy blisters that appear in the form of hives in different parts of the body.

This is due to substances such as gluten from wheat and rye and products derived from barley, causing the immune system to attack the skin.

Pemphigus Vulgaris

It is an autoimmune disease that causes blisters on the skin as a reaction of the immune system, producing antibodies against specific proteins of the skin and mucous membranes.

The exact cause of these blisters is unknown, as this disease is rare. Pemphigus Vulgaris can occur in middle-aged or older adults.

Allergic drug reactions

The ingestion of some medicines can cause the appearance of blisters on the body as a result of an allergic reaction, such as:

  • Furosemide
  • Sulfasalazine
  • Spironolactone
  • Penicillin
  • Penicillamine
  • Antipsychotics

Also, treatments applied to cancer, such as radiotherapy, can cause blisters to appear on the body and skin where the treatment is applied.

Symptoms of blisters on the body

Some symptoms among which are may accompany the presence of blisters on the body:

  • Localized bubbles filled with a clear or bloody liquid.
  • Body pain.
  • Itchy skin .
  • Redness
  • Inflammation.
  • Fever.
  • Fatigue.

How to cure blisters on the body

The appearance of this injury in the body generates pain and discomfort. A doctor must see this and indicate the specific treatment depending on the cause that has originated it.

The doctor from the consultation will tell you how to avoid complications:

  • Keep the blister area clean with plenty of soap and water.
  • Use cold compresses or ice the injury, as this can improve inflammation and the discomfort it generates.
  • Cover it with gauze to keep it clean and away from germs when the blister breaks.
  • In the vast majority of cases, the blisters heal on their own.

You should go to the doctor, especially if you notice signs such as:

  • Hot.
  • Redness
  • Inflammation.
  • Suppuration is accompanied by pus and pain.

This may mean an infectious process, so your doctor will need to make a diagnosis to indicate antibiotics and anti-inflammatories to alleviate the symptoms you present.

This article is merely informative, at FastlyHeal .com we do not have the power to prescribe medical treatments or make any type of diagnosis. We invite you to see a doctor in the case of presenting any type of condition or discomfort.

If you want to read more articles similar to Blisters on the body: why they come out and how to cure them, we recommend entering our Skin, hair, and nails category.

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