Disclosure: Vuret makes the HS Flare Control Cream featured on this page, so we have a financial interest in it. We still list real alternatives, including when another option may suit you better. This article is educational and is not a substitute for advice from your own doctor.
TL;DR
Hidradenitis suppurativa vs boils comes down to pattern: a boil is a single infected hair follicle that usually heals once, while HS causes repeated, painful lumps in the same skin-fold areas that can form tunnels and scars. If lumps keep returning in your armpits, groin, or under the breasts, think HS and get it checked by a doctor.
Hidradenitis suppurativa vs boils is a common worry, because early HS looks a lot like a boil. The difference matters, since boils are usually a one-time problem while HS is chronic and needs a different plan. Here is how to tell them apart.
What is the main difference between HS and a boil?
A boil (furuncle) is a bacterial infection of a single hair follicle, usually Staphylococcus aureus. It swells, fills with pus, drains, and heals.
HS is a long-term inflammatory condition of the hair follicles in skin-fold areas. The lumps keep coming back, often in the same places, and can connect under the skin.
Hidradenitis suppurativa vs boils: side-by-side
| Hidradenitis suppurativa | Boil | |
|---|---|---|
| Cause | Chronic follicle inflammation and blockage | Bacterial infection of one follicle |
| Where | Armpits, groin, buttocks, under breasts, inner thighs | Anywhere with hair, often face, neck, buttocks |
| Pattern | Recurs repeatedly in the same areas | Usually a single episode |
| Number | Often several lumps, both sides of the body | Usually one |
| Tunnels and scars | Can form under the skin; ropey scars | Uncommon |
| Blackheads | Often paired blackheads in the same area | No |
| Healing | Slow, may recur or drain for weeks | Typically 1 to 3 weeks |
| Contagious? | No | The bacteria can spread by contact |
| Treatment | Long-term management | Warm compresses, sometimes drainage or antibiotics |
Where do HS lumps show up?
HS favors areas where skin rubs or folds: the armpits, groin, inner thighs, buttocks, and under the breasts. A boil can appear anywhere there is a hair follicle, including the face and neck.
If your "boils" keep showing up in the same fold, that pattern is the biggest clue for HS.
Is it HS or a boil if the lump keeps coming back?
Recurrence is the key sign. Having two or more lumps in a typical HS area within six months, often with drainage and scarring, is a common diagnostic pattern for HS. A single lump that heals and does not return is much more likely to be a boil.
Many people with HS go years being told they have recurrent boils before they get a diagnosis. Don't wait if this sounds familiar.
How are they treated differently?
Boils often settle with warm compresses, and a doctor may drain a large one or prescribe an antibiotic. Never squeeze a boil.
HS needs a longer plan based on severity. For mild HS (Hurley stage I) and some stage II, a prescription topical such as clindamycin or a resorcinol and clindamycin cream plus an antiseptic wash can help. See our guides to clindamycin for hidradenitis suppurativa and the best topical treatment for hidradenitis suppurativa.
Moderate to severe HS often needs biologics such as adalimumab, secukinumab, or bimekizumab, or surgery. Those require an in-person dermatologist. Our ranking of the best hidradenitis suppurativa treatments lays out the options.
What else can look like HS or a boil?
Several skin problems share the red, painful lump look. A doctor may need to rule these out.
- Ingrown hairs and folliculitis: small, itchy or tender bumps around hairs, usually clearing in days and rarely forming tunnels.
- Cysts (epidermoid cysts): a firm, slow-growing lump under the skin that may become inflamed.
- Abscesses from MRSA: a larger, very painful infected pocket that often needs drainage.
- Pilonidal disease: lumps and draining sinuses near the tailbone.
Because the treatments differ, a clear diagnosis saves time. Photos taken over several flares can help a clinician see the pattern.
What does a doctor look for to diagnose HS?
There is no single blood test. Diagnosis rests on three things: typical lesions (deep painful nodules, abscesses, tunnels, scars), typical locations, and a pattern of recurrence over time. A clinician may ask about family history, smoking, and weight, since these are linked to HS.
Sometimes a swab is taken to check for a true bacterial infection. A clear culture does not rule out HS, because the inflammation is not only from infection.
Why does an HS diagnosis often take so long?
Early HS looks ordinary, flares come and go, and many people are embarrassed to show lumps in sensitive areas. As a result, they treat each lump on its own as a boil for years.
Earlier diagnosis matters because treatment is more effective before tunnels and scars form. If the pattern above sounds like you, mention the word "hidradenitis" to your clinician.
Choose "treat as a boil" if...
- It is a single lump that appeared once.
- It is not in a skin fold, or it is in a spot where you have never had lumps.
- It drains and heals within a couple of weeks.
Choose "get checked for HS" if...
- You get repeated lumps in the armpits, groin, buttocks, or under the breasts.
- Lumps leave scars, tunnels, or paired blackheads.
- The "boils" keep returning on both sides of the body.
- A family member has HS.
See a doctor in person promptly if a lump comes with fever, rapidly spreading redness, severe pain, or if you have diabetes or a weakened immune system. Those can signal a serious infection that needs examination.
What should I do next?
If your picture fits mild HS, an online visit can be a practical start. A U.S.-licensed physician can review your history and photos, and if appropriate prescribe the Vuret HS Flare Control Cream (resorcinol 15% + clindamycin 1%), a compounded medication that is not FDA-approved. If the doctor thinks your lumps are not mild HS or need in-person care, they will tell you.
For more on diagnosis, see the Mayo Clinic overview of HS.
HS Flare Control Cream: Resorcinol 15% + Clindamycin 1%
A prescription cream that pairs resorcinol 15% with clindamycin 1%, applied right where flares start. Prescribed online by a U.S.-licensed physician only if it is right for you. Compounded medications are not FDA-approved.
See HS Flare Control CreamFrequently asked questions
How can I tell if I have HS or just boils?
Look for repeated lumps in the same skin-fold areas, scarring, tunnels, or paired blackheads. A single lump that heals and does not return is more likely a boil. A dermatologist can confirm the diagnosis.
Is hidradenitis suppurativa contagious like a boil?
No. HS is an inflammatory condition, not an infection you can pass on. The bacteria in a boil can spread by contact, so keep boils covered and wash your hands.
Can HS start as a boil?
Yes, early HS often looks like a single boil or ingrown hair. The giveaway is that it returns, usually in the same area.
Should I pop or squeeze an HS lump or a boil?
No. Squeezing can push infection deeper, increase inflammation, and worsen scarring. Warm compresses and medical care are safer.
Do boils and HS need the same antibiotics?
Not always. A boil may need a short course or just drainage, while HS uses antibiotics as part of a longer plan, and moderate to severe HS often needs biologics or surgery. A doctor should guide this.