Blood Blister Treatment Plus Causes and When to See a Doc

Co-authored by Jessica Gibson | Medically reviewed by Jennifer Boidy, RN

Last Updated: October 25, 2022 References Approved

Blood blisters might look like a cause for alarm, but they're fairly common. Fortunately, blood blisters usually clear up on their own within a few weeks, although there are things you can do to feel more comfortable. In this article, we'll answer your questions about treating a blood blister and address whether or not you need medical treatment.

Things You Should Know

To treat a blood blister, don't pop it—keep it clean and dry, and let it heal on its own. There's usually no need to get medical treatment.
If a blood blister pops, rinse the area with cool water and cover it with a bandage. Don't peel or tear off the skin.
Take ibuprofen or acetaminophen to relieve the pain after you pinch your skin. If your skin feels itchy, apply a cool, wet cloth to the blister.

Section 1 of 5:

How do I treat a blood blister?

1
Avoid popping the blood blister to prevent infection. The skin covering the blister stops germs from entering the wound, so don't be tempted to drain your blood blister. Instead, put on a bandage or apply a piece of moleskin over the blister to protect it if you're worried that you'll accidentally pop it.^{[1]
X
Trustworthy Source
American Academy of Dermatology
Professional organization made of over 20,000 certified dermatologists
Go to source}
- If you pop or try to drain a blood blister, harmful germs and bacteria can get into the wound and cause an infection. It also slows down the healing time.
2
Take pain medication to relieve discomfort and leave the blister alone. Fortunately, there's not much for you to do to treat a blood blister—it heals all by itself. The most important thing you can do is prevent further injury and take ibuprofen or acetaminophen to manage the pain.^{[2]
X
Research source}
- Blood blisters can make your skin feel warm and tender to the touch, so pain relievers can really help.
Advertisement
3
Apply a cold compress or ice pack if your skin feels hot. To temporarily numb the pain after pinching your skin, wrap an ice pack in cloth and press it gently against your skin for 10 to 20 minutes.^{[3]
X
Trustworthy Source
Cleveland Clinic
Educational website from one of the world's leading hospitals
Go to source}
- If the area is itchy, lay a cool wet cloth on your skin or soak in a cool bath.

Section 2 of 5:

What should I do if my blood blister pops?

1
Spread a light layer of antibiotic cream over the wound. Rinse the popped blood blister with cool water—there's no need to use soap, hydrogen peroxide, or alcohol since they can slow down healing.^{[4]
X
Research source} When your blood blister pops or tears, it opens the way for germs and bacteria to get into the wound. To prevent infection, gently apply a thin layer of antibiotic cream onto your skin.^{[5]
X
Research source}
- Alternatively, you could use petroleum jelly, which acts as a barrier and prevents the bandage from sticking to the blister.^{[6]
  X
  Research source}
2
Cover the popped blood blister with a bandage. Don't peel or tear off the flap of skin over the blister. Once it's clean, smooth it back over your skin and put the bandage over it. Although standard bandages work, a cushioned bandage provides more protection.^{[7]
X
Research source}
- Place a donut-shaped piece of moleskin around the blister before you put on the bandage if the blister is in a spot that will have things rub up against it.

Section 3 of 5:

How long does a blood blister take to clear up?

Blood blisters heal within 1 to 2 weeks. Although your blood blister is tender and large at first, it gradually gets smaller as the fluid inside the blister dries up. The whole healing process usually finishes within a couple of weeks.^{[8]
X
Research source}
- Try to stay off of your blood blister so you're not putting pressure on it, which could cause it to burst. If your blood blister is on your feet, elevate your feet whenever possible.

Section 4 of 5:

When should I see a doctor?

1
Call your doctor if the blister doesn't heal or it looks infected. If you've got an infection, the blister might feel painful or it will swell up instead of shrink. The skin around the blister will look red or feel warm—you may even see streaks of red leading away from the blister. Oozing pus or fever are other telltale signs of infection, so don't hesitate to call your doctor if you have any of these symptoms.^{[9]
X
Research source}
- To treat an infection, your doctor might prescribe oral antibiotics. For a more serious infection, they may use intravenous antibiotics.
2
Get medical advice if your blood blister is in an awkward spot. If you've got a blood blister on your mouth, eye, or heel, for instance, ask your doctor if they recommend draining it. In some cases, if it's hard to go about your daily activities, they might suggest coming in to drain, treat, and bandage the wound.^{[10]
X
Research source}

Section 5 of 5:

What causes a blood blister?

1
Blood blisters can form when your skin gets pinched. Usually, blood blisters form on your fingers or toes because it's easy for these to get pinched in a hinge or closing door. Blood blisters are pretty noticeable—you'll see a tender, raised pocket of a blister, but it's dark red or purple instead of clear.^{[11]
X
Research source}
- Most blood blisters form within a few minutes of getting your skin caught or pinched.
2
Minimize friction to prevent blood blisters. If you frequently get blood blisters in the same spots like on your feet, apply talc-free powder or wear thicker socks. If socks aren't an option, add padding directly to your shoes so they don't rub against and pinch your skin.^{[12]
X
Research source}

Expert Q&A
Did you know you can get premium answers for this article? Unlock premium answers by supporting wikiHow

Question

I have a blister on the bottom of my toe. It is hard to hold it up, and it hurts when I put pressure on it, but it does not protrude from the skin like most blisters. What do I do?

Jennifer Boidy, RN
Registered Nurse
Jennifer Boidy is a Registered Nurse in Maryland. She received her Associate of Science in Nursing from Carroll Community College in 2012.

Jennifer Boidy, RN

Registered Nurse

Expert Answer

Support wikiHow by unlocking this expert answer.

Protect it with an adhesive donut-shaped moleskin pad. It should be placed with the blister within the opening of the pad. These can be purchased in retail stores, pharmacies, and online.
Question

When your blister hurts right after you got it do you have to put ice on it ASAP?

Jennifer Boidy, RN
Registered Nurse
Jennifer Boidy is a Registered Nurse in Maryland. She received her Associate of Science in Nursing from Carroll Community College in 2012.

Jennifer Boidy, RN

Registered Nurse

Expert Answer

Support wikiHow by unlocking this expert answer.

You should try to ice it (don’t put ice directly on skin) as soon as you can to help with pain and swelling.