Boils - Topic Overview
What are boils?
A boil is a red, swollen, painful
bump under the skin. It often looks like an overgrown pimple. Boils are often
caused by infected hair follicles. Bacteria from the infection form an
abscess, or pocket of pus. A boil can become large and
cause severe pain.
Boils most often happen where there is hair and
rubbing. The face, neck, armpits, breasts, groin, and buttocks are common
How do you treat a boil?
You can sometimes care
for a boil at home.
- Do not squeeze, scratch, drain, or open the boil. Squeezing can
push the infection deeper into the skin.
- Gently wash the area with soap and water twice a day. Dry it
- Put warm, wet cloths on the boil for 20 to 30 minutes, 3 or 4
times a day. Do this as soon as you notice a boil. The heat and moisture can
help the boil to open and drain, but it may take 5 to 7 days. A warm compress
or waterproof heating pad placed over a damp towel may also help.
- Keep using heat for 3 days after the boil opens. Put a bandage
on it so the drainage does not spread. Change the bandage every day.
- If the boil is draining on its own, let it drain. Keep cleaning
it twice a day with soap and water.
- To help keep the infection from
spreading, do not share towels and washcloths with other people.
Your doctor may want to cut a small opening in the boil
so that the pus can drain out. This is called lancing the boil. He or she will
numb the area first. Sometimes gauze is placed in the cut so that it stays open
and keeps draining.
Your doctor may also prescribe antibiotics to
stop the infection. Take your antibiotics as directed. Do not stop taking them
just because you feel better or the boil looks better. You need to take the
full course of antibiotics.
When should you call a doctor?
Call your doctor
- The boil is on your face, near your spine, or near your
- A boil is getting larger.
- You have any other lumps near the boil, especially if they
- You are in a lot of pain.
- You have a fever.
- The area around the boil is red or has red streaks leading from
- You have
diabetes and you get a boil.
- The boil is as large as a ping-pong ball.
- The boil has not improved after 5 to 7 days of home
- You get many boils over several months.