Most boils can be treated at home with warm compresses and good hygiene, while cysts often require professional removal. The right approach depends on which one you’re actually dealing with, since boils and cysts look similar but behave differently and respond to different treatments.
Boil or Cyst: How to Tell the Difference
A boil is a pus-filled lump that forms around a hair follicle, caused by bacterial infection. Boils are painful from the start, often beginning as a tender, itchy spot that swells into a firm, red bump ranging from the size of a cherry pit to a walnut. They grow relatively quickly over days, feel warm to the touch, and eventually develop a visible white or yellow tip as pus collects near the surface. They may leak or drain on their own.
A cyst is a slow-growing, fluid-filled sac that sits just under the skin. Cysts are usually painless and can linger for weeks or months without changing much. They range from smaller than a pea to several centimeters across and feel smooth and round when you press on them. Unlike boils, cysts don’t start with redness or tenderness unless they become inflamed or infected, at which point they can look and feel a lot like a boil.
The simplest distinction: if the lump appeared quickly, hurts, and looks red and angry, it’s likely a boil. If it’s been there a while, moves slightly under the skin, and doesn’t bother you, it’s probably a cyst.
How to Treat a Boil at Home
Warm compresses are the most effective home treatment for a boil. Soak a clean washcloth in warm water, wring it out, and hold it against the boil for about 10 minutes at a time, several times a day. The heat increases blood flow to the area, helps your immune system fight the infection, and encourages pus to collect near the surface so the boil can drain naturally. Most small boils will open and drain within one to two weeks with this approach alone.
Keep the area clean. Wash the skin around the boil gently with soap and water, and cover it with a loose bandage to prevent the pus from spreading to other parts of your body or to other people. Wash your hands thoroughly after touching the boil or changing the bandage. Don’t squeeze, lance, or pop the boil yourself. Squeezing pushes bacteria deeper into the tissue and can spread the infection into surrounding skin or even into your bloodstream.
Over-the-counter pain relievers like ibuprofen or acetaminophen can help manage the soreness while you wait for the boil to resolve. You may see “drawing salves” marketed for pulling infections to the surface, but these products typically contain zinc chloride and plant-based compounds that are corrosive to skin. The FDA has not approved any black drawing salve product, and they can cause more tissue damage than they resolve.
Why Cysts Need a Different Approach
Warm compresses can reduce inflammation in an irritated cyst, but they won’t make it go away permanently. Cysts have an outer wall, or sac, that continues producing fluid. Even if a cyst drains or shrinks temporarily, it will almost always refill unless that sac is completely removed.
If a cyst isn’t bothering you, there’s no medical urgency to treat it. Many people live with small cysts for years without any problems. But if a cyst becomes inflamed, infected, painful, or is in a cosmetically bothersome spot, a doctor can remove it. The procedure involves a small incision, removal of the sac and its contents, and sometimes a few stitches. It’s typically done in an office visit under local numbing, and recurrence rates drop significantly when the entire sac is removed.
Never try to squeeze or pop a cyst at home. Without removing the sac wall, the cyst will return. Worse, you risk introducing bacteria and turning a painless cyst into an infected abscess.
When a Boil Needs Medical Treatment
A single small boil that responds to warm compresses usually doesn’t need a doctor’s visit. But certain signs mean the infection is beyond what home care can handle:
- The boil is larger than a golf ball or growing rapidly
- You develop a fever, which suggests the infection may be spreading
- Red streaks radiate outward from the boil, a sign of spreading skin infection
- The boil hasn’t improved after two weeks of consistent warm compresses
- You have multiple boils clustered together (called a carbuncle), which causes a deeper, more severe infection and is more likely to scar
- The boil is on your face, spine, or groin, where infections can spread more easily to critical structures
For boils that are too large or deep to drain on their own, a doctor performs a procedure called incision and drainage. The area around the boil is numbed, a small cut is made, and the pus is expressed and cleaned out. The relief is often immediate because draining the pressurized pus removes both the pain and the bulk of the bacteria. You’ll typically have a follow-up visit within a day or two to check healing, and your doctor may ask you to continue warm soaks at home and gently rinse the wound with running water to keep it clean as it heals from the inside out.
Antibiotics aren’t always necessary. For mild infections, drainage alone is sufficient. Oral antibiotics are added when the infection is moderate, when you have a carbuncle, or when you have a weakened immune system.
What Happens if You Ignore a Boil
Most boils resolve on their own or with basic home care. But in rare cases, bacteria from a boil can enter the bloodstream and travel to other parts of the body. This can lead to sepsis, a dangerous body-wide response to infection, and in severe cases to infections in the heart valves or bones. Carbuncles carry a higher risk of these complications than single boils because they involve deeper, more extensive infection.
The risk of serious complications is low for a typical boil in an otherwise healthy person, but it’s the reason you should never try to lance a boil at home with a needle or blade. Cutting into a boil before the pus has localized into a drainable pocket can push the infection deeper rather than clearing it.
Preventing Boils From Coming Back
Some people get boils once and never again. Others deal with recurrent outbreaks, often because they carry staph bacteria on their skin or in their nostrils without knowing it. If boils keep returning, a focused hygiene routine can break the cycle.
Wash your entire body daily with an antiseptic or antibacterial soap for one week, then twice weekly for several more weeks. Use hand sanitizer regularly throughout the day, since your hands are the most common vehicle for spreading staph from one body site to another. Don’t share towels, washcloths, or razors with anyone in your household. Change underclothes and sleepwear daily.
Your doctor may recommend applying an antiseptic cream like chlorhexidine or povidone-iodine directly to any active boils, and covering them with gauze to prevent contact spread. For persistent cases, applying antibiotic ointment inside the nostrils can help eliminate the staph bacteria that many carriers harbor there. If other household members are also getting boils, they should follow the same skin-cleansing routine, since the bacteria pass easily between people sharing a living space.