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What is a blister?

A blister is a collection of fluid in tiny sacs or spots on the surface (superficial layer) of the skin. Hands and feet are the most common areas on the body that are prone to blister formation. Blisters are usually filled with clear fluid (serum), blood or pus. Frequent irritation or friction damages the exposed area of skin and leads to collection of fluid, which protects the underlying tissue from further damage.

What are its main associated signs and symptoms?

Depending on the cause, different signs and symptoms are associated with blisters.

  • Pain and redness are commonly associated with blisters (e.g. wrong fitting shoes, burns, injury, etc).
  • Blisters with redness and peeling of skin occur due to burns, autoimmune diseases (epidermolysis bullosa).
  • Fever is present along with blisters near the lips in case of viral infection (fever blister).
  • Itching is associated with blisters in eczema, skin infection (impetigo).
  • Skin turns white and shiny and is associated with numbness in frostbite blisters.
  • Tanning with wrinkles on the skin is associated with blisters due to sunburn.
  • Burning pain with a scab on blisters is present in shingles (herpes zoster), chicken pox, etc.

What are the main causes of blisters?

Various causes are responsible for the development of blisters on the skin.

  • Prolonged friction or rubbing of the skin.
  • Injury due to exposure to heat, chemicals, ultraviolet rays, freezing temperature, etc.
  • Diseases such as chicken pox, herpes, zoster, and skin infections.
  • Immune system disorder such as pemphigus, epidermolysis bullosa, etc.
  • Allergic reaction such as exposure to certain plants (poison ivy, oak, etc.), chemicals, etc.

How are blisters diagnosed and treated?

Physical examination, history of symptoms, and different tests help doctors in making the diagnosis of blisters.

  • Examination and history
    • Appearance – Blisters consisting of clear fluid, blood, or pus
    • Location – Blisters on one side of the body or specific location or all over the body
    • History of symptoms – Blisters associated with pain, itching, fever, etc.
  • Tests
    • Complete blood count
    • Levels of IgE for detecting allergy, IgG, IgM, and other advanced tests for autoimmune diseases.
    • Culture of bacteria from the fluid sample taken from the blister helps in detecting the bacteria responsible for infection and to decide the antibiotic for the treatment.
    • Polymerase chain reaction or PCR to confirm the presence of bacteria or virus that cause blisters.
    • Blood allergy test and skin allergy test are performed to identify the allergen.
    • Skin biopsy – Skin sample is examined under a microscope to detect the cause and rule out other causes of the blister.
    • Special tests are performed to detect the presence of antigens and antibodies that are associated with blister formation.
    • Genetic tests are performed to detect hereditary issues.

Blisters generally heal by themselves without medicines. Medicines are used in conditions such as:

  • Antibiotics are used
    • To treat the infection when the blister is filled with pus
    • If the blister reoccurs
    • For severe blisters occur due to allergy, photosensitivity or burns
    • If blisters appear inside the mouth or other uncommon locations
  • Antiviral medicines
    • For blisters due to chickenpox, herpes zoster or fever blisters.
  • Corticosteroids and immunity modulating medicines are used in blisters due to autoimmune disorders.
  • Anti-inflammatory medicines are used to reduce the pain.
  • Anti-allergy medicines are used to decrease the itching.
  • Sunscreen lotions are used to prevent sunburn.
  • Surgery and skin grafting is needed in severe cases of blisters and deformity caused by it, especially in cases of autoimmune diseases.

Self-care

  • Avoid bursting and peeling the skin off the blister.
  • Cover the burst blister with a soft dressing after draining out the fluid from it.
  • Do not use incorrect fitting shoes that may cause blisters.
  • Use proper insole padding to avoid bursting of blisters, especially on feet.
  1. Medicines for Blisters
  2. Doctors for Blisters
Dr. Sushila Kataria

Dr. Sushila Kataria

सामान्य चिकित्सा

Dr. Sanjay Mittal

Dr. Sanjay Mittal

सामान्य चिकित्सा

Dr. Prabhat Kumar Jha

Dr. Prabhat Kumar Jha

सामान्य चिकित्सा

Medicines for Blisters

Medicines listed below are available for Blisters. Please note that you should not take any medicines without doctor consultation. Taking any medicine without doctor's consultation can cause serious problems.

Medicine NamePack SizePrice (Rs.)
TerbinaforceTerbinaforce 1% Cream44
Bjain Caltha palustris DilutionBjain Caltha palustris Dilution 1000 CH63
ADEL 29 Akutur DropADEL 29 Akutur Drop200
ADEL 2 Apo-Ham DropADEL 2 Apo-Ham Drop200
ADEL 32 Opsonat DropADEL 32 Opsonat Drop200
Etaze AfEtaze Af 0.1% W/V/1% W/V Lotion96
Schwabe Acidum nitricum LMSchwabe Acidum nitricum 0/1 LM80
Tyza MTYZA M CREAM 15GM59
Elomate AfElomate Af Cream72
Momesone TMomesone T Cream109
HhdermHhderm Cream188
ADEL 40 And ADEL 86 KitAdel 40 And Adel 86 Kit 499
Momoz TMOMOZ T 10GM OINTMENT122
Xinomom CfXINOMOM CF 5GM CREAM39
ADEL 40 Verintex DropADEL 40 Verintex Drop200
TekfinemTekfinem Cream73
HhzoleHhzole Cream116
Terbinator MTerbinator M Cream82
Metacortil CMetacortil C Cream92
ADEL 56 Habifac DropADEL 56 Habifac Drop200
Tintin MHTINTIN MH CREAM 15GM0

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References

  1. MedlinePlus Medical Encyclopedia: US National Library of Medicine; Blisters
  2. National Health Service Inform [Internet]. UK; Blisters
  3. National Health Service [Internet]. UK; Overview
  4. MedlinePlus Medical Encyclopedia: US National Library of Medicine; Epidermolysis bullosa
  5. MedlinePlus Medical Encyclopedia: US National Library of Medicine; Fever blister
  6. MedlinePlus Medical Encyclopedia: US National Library of Medicine; Pompholyx eczema
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