Blood blister

Blood Blisters

Introduction

A blood blister is a type of blister that forms when a minor injury leads to blood vessels rupturing near the surface of the skin, filling the space between the layers of skin with blood or bloody serum.

Causes

Blood blisters are commonly caused by:

• Skin Trauma: Such as pinching or crushing injuries.
• Friction: Repeated rubbing against the skin, often in athletes or due to ill-fitting shoes.
• Burns: Including sunburns and other minor thermal injuries.

Appearance and Symptoms

Blood blisters appear as raised, fluid-filled sacs and are usually red or blackish in color. They may be accompanied by pain and swelling.

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A blood blister on a finger.

Types of Blisters

In addition to blood blisters, other common types include:

• Friction Blisters: Filled with clear fluid, usually caused by rubbing.
• Heat Blisters: Caused by burns, including sunburns.

Treatment

Treatment of blood blisters includes:

• Protection: Avoiding further injury to the area.
• Cleanliness: Keeping the blister clean to prevent infection.
• Avoid Popping: It's generally advised not to pop blood blisters.

When to Seek Medical Attention

Medical attention should be sought if:

• There are signs of infection, such as increased pain, redness, or pus.
• The blister is exceptionally large or painful.
• The person has a condition like diabetes that may complicate healing.

Prevention

Preventive measures include:

• Wearing properly fitting shoes and gloves for protection.
• Using protective pads or bandages in high-friction areas.

External Links

• [Link to a medical resource on blister care and prevention]
• [Link to a health portal discussing different types of skin injuries]

References

Blood blister Resources
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