General Practice 2022

Blisters on the skin: 10 causes and what to do

Blisters on the skin: 10 causes and what to do
Blisters on the skin: 10 causes and what to do
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Blisters on the skin can arise in response to irritation or inflammation, as in the case of allergies, prickly heat, or dyshidrosis, but they can also arise due to infections caused by viruses, such as herpes, smallpox, or monkeypox, can affect any part of the body in adults or children.

In some cases, the blisters on the skin may contain fluid, which when they break can spread the blisters to other parts of the body or cause sores in the affected area. In addition, they may be accompanied by symptoms such as intense itching, redness or pain in the skin.

In the presence of blisters on the skin, it is important to always go through a consultation with a dermatologist or general practitioner, to evaluate the signs and symptoms presented, in addition to the characteristics and location of the blisters, thus helping in the diagnosis and indication of the most appropriate treatment.

Thus, the main causes of blistering on the skin are:

1. Allergy

Allergy can cause small red or white skin blisters, which may contain clear fluid and be accompanied by other symptoms such as intense itching, formation of small crusts or sores on the skin. These blisters arise as a result of an inflammatory reaction and can occur anywhere on the body.

The formation of blisters on the skin due to allergy can appear in a few minutes or hours after contact with irritating substances or objects such as certain foods, medicines, jewelry, pet hair, perfumes, cleaning products, plants, latex or insect bites, for example. Know the main causes of skin allergy.

What to do: It is recommended to wash the area with cold water and neutral soap, and avoid contact with the irritating substance or object.In addition, the doctor may also recommend the use of antiallergic drugs and corticosteroids, which can be applied to the skin or taken in the form of pills. In cases of more severe symptoms, it is necessary to go to an emergency, as injectable medication may be necessary. See more examples of allergy remedies.

2. Smallpox

Smallpox, also known as smallpox, is a disease that can cause blisters to appear on the skin of the face, mouth, arms, trunk and legs. These blisters can contain a pus-like fluid and are itchy.

Being caused by the transmission of the virus of the genus Orthopoxvirus through droplets of saliva, by direct contact with the lesions or with contaminated objects. Learn more about the causes of smallpox.

What to do: Because there is no cure, the generally indicated treatment includes isolation and daily hygiene care to avoid infection of the lesions. In addition, the smallpox vaccine may also be recommended by the doctor to prevent the disease from getting worse.

3. Dyshidrosis

Dyshidrosis is a skin disease that causes the formation of small blisters with transparent liquid, which usually appear on the palms of the hands, on the sides of the fingers or on the soles of the feet and cause intense itching, which can last up to 3 weeks.

The exact cause of dyshidrosis is not known, however, it is more common during the summer and some factors can contribute to its onset such as stress, family history of the disease and frequent hand washing.

What to do: some skin care should be taken, such as applying cold water compresses to the affected region, 2 to 4 times a day, for up to 15 minutes at a time to prevent dyshidrosis from getting worse or causing skin infections. In addition, the dermatologist, or general practitioner, may also indicate the use of medicines, such as prednisone and loratadine, creams or ointments with corticosteroids, and therapies, such as phototherapy or botox, for example.

4. Monkeypox

Monkeypox is a disease that causes painful and itchy blisters to form on the skin, which appear on the face and then can spread to the chest, hands and feet, and can also reach the genitals.

Monkeypox is mainly transmitted from animals to people, through the bite of infected rodents, consumption of undercooked meat and/or contact with secretions or blood of infected animals. In addition, monkeypox can also be transmitted from person to person, through droplets of saliva and direct contact with lesions, for example. Find out how monkey pox is transmitted.

What to do: As there is no specific treatment for monkeypox, it is generally recommended to isolate and maintain daily hygiene care to avoid infection of the lesions. In addition, the doctor may also indicate the use of painkillers to relieve other symptoms of the disease and the use of the vaccine against the virus to prevent severe cases of the disease.

See all about monkeypox in the video below:

5. Chickenpox

Chickenpox, or chickenpox, is a disease caused by the Varicella-zoster virus, which causes small blisters, which can contain fluid, on the skin all over the body.

In addition, chickenpox blisters are also accompanied by intense itching that can cause skin sores. Know how to recognize the blisters caused by chickenpox.

What to do: rest and use medicine recommended by the doctor, such as paracetamol, in case of fever, or antiallergic in the form of pills or ointments to relieve the itchy skin.

In addition, contact with other people and direct contact with the liquid from the blisters, with droplets of saliva, coughing or sneezing, should be avoided, because chickenpox is highly contagious and can pass from one person to another through

6. Prickly heat

Prickly heat, also known as miliaria, is characterized by the presence of small itchy blisters on the skin that may contain water or pus, and are accompanied by a burning sensation in the skin, affecting any region of the body, being more frequent face, neck, back, chest or thighs.

Prickly heat occurs when the pores through which sweat is eliminated become blocked, trapping perspiration under the skin, thus causing inflammation, being more common in newborns. However, it can occur in anyone at any age, and some factors can contribute to the development of prickly heat, such as very hot environments, very intense physical activity or high fever, for example.

What to do: wear fresh, loose-fitting, cotton clothes to improve skin perspiration; avoid using creams and ointments with mineral oil, for example, as they can block pores; and apply a chamomile compress to the skin, it can help relieve the blisters on the skin.In addition, the doctor may also prescribe the use of creams, such as calamine, or anti-allergic ointments. Discover some home remedies for heat rash.

7. Herpes

There are two types of herpes that can lead to the appearance of blisters on the skin containing fluid, accompanied by tingling in the affected region and pain or formation of sores on the skin.

Herpes simplex is more common to occur on the lips or in the area just below the lip, called cold sores, but it can also occur in the intimate area, known as genital herpes. Herpes zoster, on the other hand, can occur on the chest, back and belly, although blisters can also appear on the skin affecting the eyes or ears.

What to do: usually the doctor indicates the use of antiviral drugs, such as acyclovir, fanciclovir or valaciclovir, in the form of pills and/or ointment, to relieve the pain caused by the blisters and decrease the activity of the virus. In addition, it is important to maintain some personal care, such as washing your hands well after contact with the blisters, not puncturing the blisters and adopting preventive measures to avoid transmitting the virus to other people, such as avoiding kissing and sharing personal objects such as cutlery, cups or towels, and using condoms during sexual intercourse.

8. Pemphigus

Pemphigus is an autoimmune, non-contagious disease, characterized by the formation of several small soft blisters on the skin, which can easily break after hours or days and do not heal, and can also affect the mucous membranes, such as the mouth, eyes, nose, throat and intimate region. Understand more about pemphigus.

What to do: Treatment should be indicated by a dermatologist who may prescribe the use of corticosteroids or immunosuppressants to treat or prevent the appearance of blisters. In the event that some type of infection appears in the wounds left by the blisters, the doctor may also prescribe antibiotics, antifungals or antivirals.

9. Hand-foot-mouth syndrome

Hand-foot-mouth syndrome is a highly contagious disease that occurs most often in children under 5 years of age, leading to painful blisters on the hands, feet, and sometimes in the intimate region.

This disease is caused by viruses of the coxsackie group, which can be transmitted from person to person or through contaminated food or objects. Know all the causes of hand-foot-mouth syndrome.

What to do: the treatment lasts about 7 days and must be indicated by the pediatrician, or general practitioner, who may indicate the use of antihistamines to relieve the itching and other medicines, such as paracetamol, to reduce fever, for example.

10. Seromas

Seromas are skin inflammations that lead to the formation of bubbles with liquid, close to the surgical scar, and that can arise after procedures such as plastic surgery, abdominoplasty, liposuction, breast surgery or cesarean section, for example. See the main causes of seroma.

What to do: When small, the seroma can be reabsorbed naturally by the skin, disappearing after about 10 to 21 days. However, in some cases, the doctor may recommend using medications, such as antibiotics, pain relievers, and anti-inflammatories, in addition to performing a puncture with a syringe or placing a drain, to help remove the fluid.

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