Blisters are fluid-filled bubbles that form on the skin due to friction, burns, infections, or underlying medical conditions. They can be painful but usually heal on their own.

Common Causes

• Friction: Tight shoes or repetitive rubbing

• Burns: Sunburn, heat exposure, or frostbite

• Infections: Chickenpox, shingles, or impetigo

• Allergic reactions: Contact dermatitis from irritants

• Medical conditions: Autoimmune diseases or eczema

Treatment Options

• Self-care:

  • Avoid pressure on the blister.

  • Keep it clean and covered with a bandage.

  • Apply petroleum jelly after draining (if necessary).

  • Resist popping it—intact skin prevents infection.

• Medical attention:

  • If the blister contains pus or shows signs of infection (red streaks, swelling, fever).

  • If blisters appear in unusual places (eyelids, mouth).

  • If caused by burns, frostbite, or allergic reactions.

Prevention Tips

• Wear properly fitting shoes and moisture-wicking socks.

• Use gloves for activities that cause hand friction.

• Apply sunscreen to prevent sunburn blisters.

• Avoid direct contact with irritants or allergens.