Hidradenitis is painful inflammation (redness and swelling) of the sweat glands. At first, it looks like pimples, but the pimples can become large red bumps under the skin. It often happens in the parts of your body that get sweaty or hot, or where your body rubs against itself. For example, it often occurs in the groin, armpits, or the skin between the buttocks.
What is the cause?
The exact cause of hidradenitis is not known. It tends to run in families and normally starts in the teen years. Itâ€™s more common in women, African Americans, people with acne, people who are overweight, and people who smoke.
What are the symptoms?
Symptoms may include:
Red skin bumps that may itch, burn, or hurt
Skin bumps that are tender to touch, contain pus, and may get bigger and break open. The bumps may leave scars as they heal.
Thick scars may form around and between bumps.
How is it diagnosed?
Your healthcare provider will ask about your symptoms and medical history and examine you. The diagnosis is made asking about whether youâ€™ve had these bumps before and by inspecting the skin for the typical skin changes.
Tests may include:
A test of drainage from a bump to check for infection
Biopsy, which is the removal of a small sample of skin tissue for testing
How is it treated?
There is no cure for hidradenitis, but treatment can usually control symptoms. It often comes and goes (flare-ups) even with treatment. Your healthcare provider may prescribe medicine to:
Decrease how often you get these bumps
If your symptoms are severe, your provider may recommend:
Surgery to drain infected bumps or to remove scar tissue. Although surgery may cure one bump, you may get new bumps in a different place.
Laser therapy to remove bumps and scars.
How can I take care of myself?
To help decrease pain when you have a flare-up, try putting a clean, warm, wet washcloth on painful bumps. Leave the cloth on each bump for about 10 minutes. Do this 3 or 4 times a day. If the bumps are in the groin or buttock area, sitting in a tub of warm water for 10 to 15 minutes, 3 to 4 times a day, may help.
To help prevent flare-ups, it may help to:
Lose weight if you are overweight, to decrease the number of areas where skin rubs together.
Wear loose clothing to decrease friction.
Avoid irritating your skin by not shaving in places where you get the bumps, like your underarms.
Keep from getting overheated and sweaty.
Follow the full course of treatment prescribed by your healthcare provider. Ask your provider:
How and when you will hear your test results
How long it will take to recover
What activities you should avoid and when you can return to your normal activities
How to take care of yourself at home
What symptoms or problems you should watch for and what to do if you have them
Make sure you know when you should come back for a checkup.
Developed by RelayHealth.
Adult Advisor 2015.1 published by RelayHealth. Last modified: 2014-02-06 Last reviewed: 2014-01-09
This content is reviewed periodically and is subject to change as new health information becomes available. The information is intended to inform and educate and is not a replacement for medical evaluation, advice, diagnosis or treatment by a healthcare professional.