Last Updated on Jun 22, 2011

What are Blisters?

  • Occurs due to friction caused by constant rubbing of shoes / clothes
  • Outer skin layer separates from inner layer
  • The space in-between fills up with fluid
  • Common in athletes, trekkers, rowers
  • Also seen in people using new shoes
  • Can be prevented

Fever Blisters 

  • Fever blisters appear in /around mouth 
  • Fever blisters caused by virus, Herpes Simplex
  • Type-1 Herpes virus usually involved in fever blisters
  • These blisters are contagious
  • Recurrent episodes may occur
  • Recurrence due to stress/illness/injury/sunlight

  • Bubble-like structures on skin
  • Redness over the area
  • Itching
  • Pain

  • Make a hole at the edge of blister
  • Use a sterilized needle or pin
  • Pin/needle sterilized by passing over flame
  • Drain the accumulated fluid 
  • Keep skin intact to prevent infection
  • Clean blister with gauze containing iodine/alcohol
  • Apply antibiotic ointment
  • Cover with adhesive bandage for small blister
  • Use porous, bandage for large ones
  • Do not puncture blister if painless
  • Do not puncture a blood-filled blister
  • Blisters disappear in a few days time
  • Diabetics should consult doctor 
Managing for fever (Oral) blisters
  • No permanent cure/vaccination for Herpes infection
  • Keep blisters dry & free of infection
  • Eat a bland diet

Prevention Blisters

  • Wear the right size shoe
  • Cover the potential area with taping 
  • Keep feet dry always
Fever blisters

  • Avoid touching blisters
  • Avoid contact with an infected person
  • Avoid stressful situations

Most Popular on Medindia


dizzi2k4, United Kingdom

i got a big massive blister on my penis and i need treatmen and help

roy53, Guam

Im more of researching a tung blister. What website can I go into to find a first aid treatment for tung blister in the mouth.

blistersonfeet, United States

It's great to see good information on the care and treatment of blisters. Jack Joseph, Blisters on Feet

ROCKY2, Kenya

Thank you for your information on blisters it has really helped me in my first aid research work while i am undertaking a diploma in Education P.E.
Joshua Kipchumba