Should I Pop My Blister

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Share on Pinterest Blisters can appear during a flare-up of eczema symptoms.
Image credit: Peter L Johnson, 2011.

Should You Pop a Blister?

Blisters, am I right? We all get them. Maybe you wore shoes that weren’t quite right for your feet. Maybe that baking sheet wasn’t quite cool enough to handle. Or maybe you have a medical condition or a viral infection that causes flare ups of blisters.

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Wherever they came from, the temptation to pop a blister may just get the best of you. But experts say that’s usually not your best bet.

We talked with dermatologist Shilpi Khetarpal, MD, about why you shouldn’t pop most blisters and how, instead, to treat three common kinds of blisters.

Are you supposed to pop blisters?

The short answer? In most cases, a big ol’ nope.

“Blisters are your body’s way of forming a bandage after an injury,” Dr. Khetarpal says. “The fluid in the blister helps to prevent further damage to the skin below and allows the skin to heal.”

How to pop a blister (if you must)

In most cases, you’re best off letting a blister heal on its own. But the American Academy of Dermatology (AAD) says you can drain a blister if it is “very large and painful.”

Popping or draining a blister can lead to infection, so if you absolutely must do it, take care to keep it clean.

Sterilize a small needle with rubbing alcohol.
Pierce the edge of the blister with the needle to allow some of it to drain.
Keep the “roof” of the blister (the skin that protects it) intact as much as you can. It will act as a natural bandage to protect the skin below.

Certain people at risk for infection should consult their healthcare practitioner to drain a blister. They will use a sterile needle to allow fluid to drain. This is especially important for people with compromised immune systems, including:

People who have HIV.
People who have diabetes.
People who take medications that suppress their immune systems.

Treating a popped blister

If your blister bursts, naturally or otherwise, you’ll want to take care to ensure it heals properly and doesn’t become infected.

Don’t peel off the dead skin. Leave it in place to shield the skin underneath from dirt, debris and bacteria.

Allow the fluid to drain naturally and then cover the area with a dry, sterile bandage to promote healing and keep it clean.

Kinds of blisters and treatments

Blisters can often be a result of repetitive friction, like from shoes or gloves. They’re also common after being burned. And some medical conditions can cause blistering, too.

Dr. Khetarpal helps explain the causes of these different kinds of blisters, how to prevent them and how to treat them.

Friction blisters

It’s a common scenario. You’ve laced up your brand-new running shoes. But 10 minutes into your run, you feel a painful rub. The next morning, you see it: The angry, red skin has puffed up and is a fluid-filled sac.

Friction blisters commonly form on your toes, feet and ankles after wearing shoes that are too tight or too loose. (It’s a Goldilocks kind of thing … you want them to fit juuuust right.) Even with a proper fit, though, some new shoes are more likely to cause blisters than your worn-in favorites. Materials like leather, for example, need some time to wear in and soften to mold to your feet.

Friction blisters may also form on your palms or fingers after working with your hands, like when shoveling, gardening or performing other hands-on tasks.

How to prevent them

The AAD suggests these steps to prevent nagging and painful friction blisters:

Wear well-fitting shoes and gloves.
Avoid cotton socks or gloves, which soak up sweat and lead to chafing.
Apply powder or petroleum jelly to areas of friction.

How to treat them

Again, popping your blister shouldn’t be the go-to. Try these methods instead:

Cover your blister with a loose bandage.
Provide some cushion by cutting a small pad into a donut shape. The blister should be in the middle, poking up through the hold in the donut.

Burn blisters

First things first, if you suffer a minor burn — say in an ill-conceived attempt to remove a hot pan from the stove — start by cooling down the area. Fast.

“When you get burned, your first course of action should be to run the burn under cool water,” Dr. Khetarpal says. “That will help with the pain and can also reduce swelling.”

Keep the burned area in cool water for about 5 minutes or until the pain stops. Don’t use ice or icy water, which can further damage the tissue.

The AAD suggests not popping a burn blister. Instead, try these fixes:

Cover the burn with a nonstick, sterile bandage.
Apply petroleum jelly two or three times a day.
Avoid ointments or applying other home remedies, like toothpaste or butter, as they can cause infection.

If the burn doesn’t improve in two weeks or causes severe pain, contact a healthcare provider for further help.

Blisters associated with skin conditions and infections

Certain conditions and viruses can cause patches of blisters or full-body blistering. They include:

Bullous pemphigoid.
Impetigo.
Pemphigus.
Viral infections, like chickenpox and shingles).
Weeping eczema.

Treatments vary for these conditions but in almost no circumstance should you pop, drain or itch these blisters. Talk with your healthcare provider about options to manage a blistering condition. They may recommend medications, ointments and other management strategies.

Can blisters scar?

The depth of the blister determines whether or not it will scar.

“The deeper the injury (particularly when it comes to a chemical or heat burn), the more likely it is for a scar to form,” Dr. Khetarpal says. “Typically, friction blisters do not scar as they tend to be more superficial.”

When should you see a doctor?

Most blisters can be treated at home. If your blister is particularly large and painful, consider talking with a healthcare provider before choosing to drain it yourself, especially if you are living with a condition that puts you at a higher risk for infection.

Also talk with a healthcare practitioner if:

You notice yellow or greenish discharge from the blister.
It’s hot or painful in the area around the blister.
There are red streaks around the blister.
You develop blisters associated with a new medical condition.

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Friction blister

Friction, or rubbing, can irritate the skin and cause a blister. Ill-fitting or tight shoes, for example, can rub the skin for a prolonged period, resulting in a blister forming.

This type of blister will usually heal on its own if a person keeps it clean and dry. Popping it will increase the likelihood of germs getting into the wound and causing an infection.

However, according to the American Academy of Dermatology (AAD), it may be advisable to drain a friction blister that is large or very painful to ease the discomfort.

Burns

Heat, electricity, and sunlight can burn the skin and lead to blistering. Chemical burns can also cause blisters.

Historically, doctors labeled burns as either first, second, or third degree. Now, they prefer to classify burns according to their depth. There are three main types of burn:

Superficial burns, which are mild burns that affect the outer layer of skin. They do not typically cause blisters.
Partial thickness burns, which affect the outer skin and some tissue in the deeper layers of skin. These burns may blister.
Full thickness burns, which affect the deepest layers of skin.

Most household burns and sunburns are either superficial burns or minor partial thickness burns. There may be a small amount of blistering, and the area will look red and a little swollen. It will also be painful.

People should not pop a blister that occurs due to burning.

Eczema

Share on Pinterest Blisters can appear during a flare-up of eczema symptoms.
Image credit: Peter L Johnson, 2011.

Dyshidrotic eczema is a common form of eczema that can cause itchy, dry skin and small, deep-seated blisters on the hands or feet. These blisters are usually itchy and painful.

Eczema is a long-term condition for which there is no cure, and the symptoms tend to come and go over time. Blisters can appear during a flare-up of symptoms, which stress or a rise in temperature can trigger.

These small blisters usually clear up in 2–3 weeks. They may burst on their own, but people should avoid popping them.

Viral infections

Certain viral infections can cause blisters. These include infections with the varicella-zoster virus, which causes chickenpox and shingles, and the herpes simplex virus, which causes cold sores or fever blisters.

Doctors will typically advise people to avoid scratching or breaking open chickenpox or shingles blisters as doing this can leave a scar. Instead, a person can try applying calamine lotion to the skin or adding baking soda or colloidal oatmeal to a cool bath to help reduce the itching.

Cold sores usually appear close to the mouth, often on or next to the lips. They may be in the form of a single blister or a cluster of blisters.

Cold sore blisters will usually go away by themselves in a week or two. It is important to avoid popping, scratching, or touching these blisters as this can spread the virus to other areas of skin, causing further outbreaks.

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Should I Pop My Blister

Should You Pop a Blister?