Bandaging a hidradenitis suppurativa (HS) wound in the armpit is tricky because the area is curved, sweaty, and constantly moving. The key is choosing an absorbent dressing that conforms to the skin fold, protecting the surrounding skin from moisture damage, and securing everything so it stays put throughout your day. Here’s how to do it step by step.
Clean the Wound Gently First
Before applying any dressing, wash your hands thoroughly and clean the area around the wound with lukewarm water. A mild, fragrance-free cleanser works well. Avoid scrubbing directly over an open or draining lesion, as this increases pain and can damage healing tissue. Pat the area dry with a clean towel or gauze, pressing gently rather than rubbing.
If your wound is actively draining, a warm compress held against the area for 10 to 15 minutes beforehand can help soften the skin and encourage the lesion to drain more completely before you dress it. Dermatologists recommend warm compresses more than any other at-home flare management tool. Some people also find dilute bleach baths (a small amount of household bleach in a full bathtub) helpful for reducing bacteria on the skin before bandaging, though this is more practical for widespread flares than a single armpit wound.
Choose the Right Dressing Material
The amount of drainage your wound produces determines which dressing to use. HS wounds range from barely weeping to soaking through multiple layers a day, so one type doesn’t fit all situations.
- Light drainage: A standard non-stick gauze pad works fine. Look for pads labeled “non-adherent” so they don’t stick to the wound bed when you remove them.
- Moderate drainage: Foam dressings are a strong choice for the armpit. They’re soft, generally non-adhesive, very absorbent, and flexible enough to conform to skin folds. Their cushioning also reduces friction from arm movement.
- Heavy drainage: Calcium alginate dressings or gelling fiber dressings absorb significantly more fluid than standard gauze. Calcium alginate is made from seaweed-derived fibers that turn into a gel as they absorb moisture, which also helps if there’s minor bleeding. For very heavy exudate, you can layer an abdominal pad (a thick, rectangular surgical pad) over the primary dressing for extra absorption.
If odor is a concern, dressings containing activated charcoal can help absorb wound-associated smells. Silver-containing dressings also offer some odor control while adding antimicrobial protection. Both are available at most pharmacies or medical supply stores.
Protect the Skin Around the Wound
Constant moisture from a draining wound softens and breaks down the surrounding skin, a problem called maceration. The armpit is already a high-moisture environment, so this risk is real. Before placing your dressing, apply a thin layer of zinc oxide cream or a liquid skin barrier film to the intact skin around the wound. This creates a protective layer that keeps drainage and sweat from degrading healthy tissue. Zinc oxide cream is inexpensive and widely available, and about 28% of dermatologists specifically recommend it for HS flare management at home.
Keep the barrier product off the wound itself. You only need it on the surrounding skin, roughly a centimeter or two out from the wound edges.
Shape the Dressing to Fit the Armpit
A flat, rectangular dressing doesn’t naturally sit in a curved armpit. You have a few options to get a better fit. Cutting a foam dressing into a butterfly or hourglass shape, narrower in the center and wider at each end, lets it fold into the armpit crease without bunching. Alternatively, you can cut a circular or oval shape that matches the wound size plus a margin of healthy skin around it.
For larger wounds or tunneling lesions, you may need to loosely pack the wound cavity with a strip of calcium alginate or gelling fiber before placing a secondary dressing over the top. Don’t pack tightly. The goal is gentle contact with the wound bed, not pressure.
Secure the Dressing in Place
This is the hardest part. The armpit moves constantly, produces sweat, and has curved surfaces that adhesives struggle to grip. Standard medical tape often peels off within hours or irritates already sensitive skin.
A cloth-based adhesive tape called Hypafix is popular among HS patients. It’s flexible, breathable, and gentler than most medical tapes. Place the tape a few centimeters away from the wound edge rather than right next to it. This gives the adhesive a better grip on intact skin and avoids pulling on inflamed tissue when you remove it. Run strips of tape in different directions (one lengthwise, one across) to anchor the dressing against the multi-directional movement of your arm.
If tape irritates your skin or won’t stay on, skip adhesives entirely. A snug-fitting compression shirt or tank top can hold a dressing in place through friction alone. Tubular mesh bandaging (sold in rolls at pharmacies) slipped over the torso also works, though it can shift during the day.
HS-Specific Garments
A company called HidraWear makes garments designed specifically for holding HS dressings without any tape or adhesive. Their system uses a base layer (available as a crop top or unisex t-shirt for armpit wounds) with built-in “functional windows” that secure a dressing in place. The dressings attach through the garment rather than to your skin. This is especially useful if you’re dealing with daily flares and tired of wrestling with tape, or if your skin reacts badly to adhesives. The garments are lightweight, breathable, and have outward-facing seams to minimize irritation.
How Often to Change the Dressing
Change your dressing whenever it becomes saturated with drainage. For heavily draining wounds, this might mean two or three changes a day. For lighter drainage, once daily is typically sufficient. At minimum, change the dressing every 24 hours even if it looks clean, since bacteria accumulate in the warm, moist armpit environment.
You’ll know it’s time for a change when the dressing feels wet against your skin, when drainage starts to seep past the edges, or when you notice increased odor. Keep spare dressings and tape in a small bag so you can change on the go if needed. Some people find it helpful to set a midday alarm as a reminder to check and replace their dressing, especially during a heavy flare.
Signs of Secondary Infection
HS lesions are inflammatory, not infectious. Fluid drained from unruptured HS lesions typically shows no bacterial growth on culture. However, open wounds can develop secondary bacterial infections that change how the wound behaves. Most people with HS are otherwise well-appearing and don’t have fevers, so a new fever is a meaningful signal.
Watch for increasing redness that spreads well beyond the wound edges, warmth that’s noticeably worse than your typical flare, thickening or color change in the drainage (especially green or foul-smelling discharge that’s different from your baseline), or red streaking on the skin leading away from the wound. These signs suggest bacteria have colonized the wound and may be worsening the flare, which typically requires antibiotic treatment rather than dressing changes alone.