Most people have had blisterspainful or itchy bubble-like pockets of skin filled with fluid.
Friction blisters develop when something rubs your skin enough to weaken the top layer, such as tight shoes.
This article will explore what blisters are, what’s inside them, and how to help them heal.
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A common jot down of blister is a friction blister.
Friction blisters occur when something rubs the skin, such as tight shoes or a hand-held tool.
They can develop if the pressure is repeated over time or if there is a short, intense pressure.
Symptoms of Unopened (Bubble) Blister
A blister looks like a bubble on your skin.
You may have one or many of them.
The fluid inside can be clear liquid or blood.Blood blistersmay look reddish, black, or purple.
Blisters are usually very tender to the touch, and pain is a primary symptom of a bubble blister.
It may be very painful.
Infections can occur in open blisters.
If you think you have an infected blister, see a healthcare provider.
Function of Blister Fluid
The clear liquid inside a friction blister is called serum.
It is made of water, protein, and carbohydrates that leak from injured blood vessels.
The fluid will be reabsorbed as the skin heals.
Blisters that are filled with bloodform if your skin gets a severe pinch.
Sometimes, blisters can be filled with pus if they are infected.
Certain health conditions can lead to blisters on particular parts of the body or over your whole body.
Here’s how to treat a blister:
For larger blisters, some people choose to drain the blister.
This is best done by a healthcare provider.
Wait a full day after the blister develops before considering draining it.
If you see signs of infection, contact a healthcare provider for treatment.
Summary
Blisters are bubbles or pockets of fluid on your skin due to irritation and injury.
Blisters are painful, but they will generally heal on their own.
Keep the area clean and dry.
Cover the area around the blister with a clean bandage to relieve pressure.
If you note signs of infection, see a healthcare provider.
2017;28(2):139-149. doi:10.1016/j.wem.2017.03.007
Health Direct.Blisters.
MedlinePlus.Stevens-Johnson syndrome/toxic epidermal necrolysis.
National Institute of Diabetes and Digestive and Kidney Disorders.Dermatitis herpetiformis.
American Academy of Dermatology Association.Bullous pemphigoid: an overview.
Brennan F.Treatment and prevention of foot friction blisters.ACSM Health Fitness J.
2013;17(6):45-6. doi:10.1249/FIT.0b013e3182a95110
American Academy of Dermatology Association.How to prevent and treat blisters.
2020;12(5):e509-e513.
