Medically reviewed by Dennis A Porto, MD, and The Dermatologists

Skin abscesses, also called boils, are collections of pus in the skin. Abscess are caused by an inflammatory response from your body’s defenses. It is triggered when your immune system tries to kill germs that get under the skin or in the oil (sebaceous) glands. Common More than 200,000 US cases per year

  • Self-diagnosable
  • Symptoms: Firm bump with the middle filled with pus and debris
  • Color: Typically red
  • Location: Commonly found in armpits, around the anus and vagina, near your tailbone, around a tooth and in the groin region
  • Treatment: Warm compression, antibiotics, incision and drainage, surgery
Ages Affected
Age affected - abscess ICD-10: L02.91 ICD-9: 682.9

When the body’s immune system begins to fight off the infection, white blood cells move through the walls of the blood vessels into the area of the infection and collect in the damaged tissue. Thus, the abscess becomes filled with pus. The collection of pus includes dead cells, bacteria, and debris. This process then expands and inflames the surrounding follicles and tissue, causing pain. People with weakened immune systems are more prone to getting abscesses. Abscesses themselves are not contagious, but the bacteria that cause boils are.

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Symptoms of Abscess

An abscess is a tender mass that is usually surrounded by pink or red discoloration of the skin. The middle is filled with pus and debris. It causes a firm reddened bump that may increase in size. Abscesses are painful to touch and can appear anywhere on your body. They are most commonly found in armpits, around the anus and vagina, near your tailbone, around a tooth and in the groin region. Areas around hair follicles can be inflamed and aggravate the development of abscesses.

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What can I do?

Good hygiene can prevent skin abscesses. For small abscesses of half an inch or less, you may drain them naturally. You can apply a warm compress to the area for up to 30 minutes to help relieve some pain. The warmth may help reduce swelling and speed up healing. Do not attempt to drain by pressing on the abscess as this can push the infection into other tissues. Whatever is used for compression should be washed thoroughly as well, in order to prevent the infection from spreading.

Should I seek medical care?

Self-treatment alone may be inadequate in treating abscesses. It is imperative to get treatment early, as most will not improve unless you seek care as the infection can spread and lead to a fever. It will likely have to be opened and drained by a doctor through a process called incision and drainage in order to improve recovery.

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Treatment for Abscess

Antibiotics For larger abscesses, your doctor may prescribe antibiotics to clear the infection. This course of medication works against a wide range of known infectious bacterias. Otherwise, the doctor will take a sample of fluid from the abscess and test it. This is to identify the type of germ that causes the condition and prescribe more specific antibiotics.

Incision and drainage Some abscesses requires draining. The small surgery is usually performed under a local anaesthetic. The surgeon will make a cut to remove the pus and clean the hole with sterile saline. The procedure may leave a small scar.

Surgery If your internal abscess is too large to be drained with a needle, if a needle cannot get to the abscess safely, or if needle drainage has not been effective in removing all of the pus, you may need to undergo surgery.

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MedicineNet, Inc. Boils (Skin Abscesses).

U.S. National Library of Medicine. Abscess.

NHS Choices. Abscess – Treatment.

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