HS and Itch: Why Hidradenitis Suppurativa Can Itch, and What It Does and Doesn't Mean

Pain gets most of the attention in hidradenitis suppurativa (HS). It is the symptom clinicians ask about first, the one pain scales exist for, and the one most patient materials lead with.

But HS can itchPruritus (Itch): Itch. Often overlooked in Acne Inversa because pain dominates, but a significant minority of patients rate itch as the most distressing symptom, particularly during the healing phase of lesions.Pruritus (Itch)Itch. Often overlooked in Acne Inversa because pain dominates, but a significant minority of patients rate itch as the most distressing symptom, particularly during the healing phase of lesions.Read more in the glossary too.

If that has been your experience and you have wondered whether it is really “part of” your HS, or something else entirely — the research says itching is a genuine, if under-discussed, part of the condition for a substantial number of people. It just has not had the same amount of attention as pain, which means fewer patients are told to expect it and fewer feel able to bring it up.

This article covers what is known about HS-related itch, what remains genuinely uncertain, what the timing of itch may and may not tell you, and what is worth writing down before your next appointment.

Educational content only. This article explains itch as a documented HS symptom and summarises what research associates it with. It cannot diagnose the cause of your itching and does not replace an individual medical assessment.

Key takeaways

• Itching (pruritus) is a recognised HS symptom, documented by patient organisations, general medical references and dedicated research.
• Published prevalence estimates vary a great deal — from roughly a third to more than four in five people with HS, depending on the study.
• Itch has been reported before a lesion becomes visible, during active inflammation, while wounds heal, and around scars. No single timing pattern applies to everyone.
• The biology behind HS itch is still being worked out; current thinking points to several contributors rather than one simple cause.
• Itching by itself does not prove infection, confirm healing, or reliably predict a flareFlare: A period of acute worsening in a chronic condition. In Acne Inversa, a flare may be triggered by stress, hormonal changes, friction, or other factors and can manifest as new nodules, abscesses, or increased pain.FlareA period of acute worsening in a chronic condition. In Acne Inversa, a flare may be triggered by stress, hormonal changes, friction, or other factors and can manifest as new nodules, abscesses, or increased pain.Read more in the glossary — context matters more than the sensation alone.

Is itching really part of HS?

Yes. This is worth stating plainly, because plenty of people with HS have never been told to expect it.

General medical references on HS include itching among the symptoms it can cause, alongside painful lumps, drainage and scarring. Patient-organisation resources go further, describing itch as one of several sensations — alongside pain and a pulling feeling — that can accompany HS lesions, and noting that the character of a lesion’s sensations can change over its lifespan, sometimes shifting from tenderness toward pain and later toward itch.

A 2022 systematic review looking specifically at itch in HS concluded that pruritus is a significant symptom associated with reduced quality of life, greater psychosocial burden and impaired social functioning — not a minor footnote to pain. A dedicated 2025 review went further still, describing itch in HS as common but underrecognised, and calling for it to be assessed more routinely in clinical care rather than assumed away.

So if your HS itches: that is a medically plausible experience, not something you are imagining or something separate from your HS.

It is also, on its own, not enough to explain what is happening in any particular spot. Itch is a very general signal. Many skin conditions, healing processes and irritant reactions cause it too. “It itches” is genuinely useful information — but it is not, by itself, a diagnosis of anything.

How common is itch in HS?

There is no single trustworthy number here, and any article that gives you one confidently is oversimplifying.

The 2025 review summarised published prevalence estimates ranging from roughly 35% up to about 83%. That is an unusually wide spread, and it exists because the underlying studies differ in real ways: different patient populations, different disease-severity mixes, different definitions of what counts as itch, different questionnaires, and different recall periods (some ask about “right now,” others about “the past week” or “the past month”).

Two things can both be true. Itch clearly affects a substantial share of people with HS — it is not a rare or unusual symptom. And no single percentage describes every population or every patient. If you have read a specific figure elsewhere, treat it as one study’s finding rather than a fixed fact about HS in general.

When can HS itch?

There is no single HS-itch timeline. Several different patterns have been described, and knowing which one (if any) matches your own experience is more useful than knowing the “average” answer.

Before a lesion becomes visible

Some people notice itching, tingling or a burning sensation in a spot a day or so before an inflamed lump appears there. Research into early or “prodromal” HS symptoms has described sensations like these — alongside redness and warmth — as things that can precede a visible lesion by roughly twelve to forty-eight hours in some patients.

That does not mean every itchy patch of skin is about to become a lesion; most itching in daily life has nothing to do with HS at all. But if you notice the same location repeatedly itching shortly before a lump forms there, that repeated pattern is worth describing to your clinician — as an observation, not a self-diagnosis.

During an active lesion

Itch can accompany pain, swelling and drainage while a lesion is inflamed. Research has found itch severity correlated with pain, drainage and overall disease burden at a population level. That correlation tells us the symptoms tend to travel together in HS generally — it does not tell you, for any one lesion, which came first or why.

While a wound is healing

It is well established, in wound healing generally and not only in HS, that healing skin and forming scars commonly itch as part of normal tissue remodelling. HS-specific wound-care guidance acknowledges this too.

The important caveat: because itch also occurs in active, non-healing HS lesions and in other contexts, itching by itself is not a reliable sign that a wound is healing well. Use it as one small data point, not as reassurance on its own. If a wound is behaving in a way that concerns you — more painful, changing shape, spreading, or accompanied by fever or feeling unwell — that combination is what should prompt a check, regardless of whether it also itches.

Around scars

Some people describe ongoing altered sensation, including itch, in areas of longstanding scarring. Researchers have proposed that sensitisation of local nerve fibres in chronically inflamed or scarred tissue may contribute to this, among other mechanisms — but this remains an active area of research rather than an established explanation. It is reasonable to mention persistent scar-area itch to your clinician; it is not reasonable to conclude on your own that it means “nerve damage.”

After starting a treatment or new product

Not every itch in a person with HS is caused by HS. Topical treatments and skincare products can themselves cause dryness, irritation or itching — this is specifically noted in mainstream HS treatment guidance as a reaction worth discussing with a dermatologist rather than tolerating silently.

A useful question to ask yourself: did the itching start or change after you began using a new treatment, dressing, adhesive, cleanser or other product? If so, say so explicitly — that is a different conversation from “my HS itches,” and it may need a different response.

Why does HS itch?

There is not yet one clear, established answer, and current research is honest about that.

The prevailing view treats HS-related itch as multifactorial — meaning several things probably contribute, rather than one single mechanism explaining every case. Proposed contributors discussed in recent research include local inflammatory signalling, mast-cell activity, sensitisation of sensory nerve fibres, and straightforward skin irritation from moisture, friction or products, in addition to whatever is happening in chronically inflamed or scarred tissue.

Some studies have looked specifically at mast cells and inflammatory mediators in HS-affected skin as possible contributors to itch. That is genuinely useful mechanistic work, but it does not translate into a simple explanation for why any one person’s lesion itches, and it does not mean the itch is a simple histamine reaction.

Two claims worth actively rejecting because they oversimplify the current evidence:

• “HS itches because of histamine.” The proposed biology is more complicated than a single-mediator allergic response.
• “If antihistamines don’t help, the itch isn’t real.” Given how the evidence currently reads, there is no reason to expect a histamine-blocking medicine to reliably resolve itch that likely has several contributors.

What itching does not tell you

Because itch is such a general symptom, it is worth being explicit about what it cannot establish on its own:

• Not proof of infection. HS is an inflammatory condition, not a contagious infection, and itch cannot confirm or rule out infection by itself.
• Not proof of healing. Itch can occur in healing skin, but also in active lesions and around scars — so it cannot be used as reassurance that a wound is progressing well.
• Not a validated flare predictor. Itch sometimes precedes a lesion, but one itchy sensation does not mean a flare is definitely coming.
• Not proof of an allergic reaction. Persistent HS itch does not necessarily mean you are allergic to a product, medicine or material, though a genuine new reaction is often worth mentioning.
• Not proof your HS is worsening overall. Itch has been linked to disease burden at a population level, but that link cannot tell an individual person that their own disease has progressed.

None of this means itch is unimportant. It means itch needs context — where, when, alongside what — to be genuinely useful information, rather than a symptom that gets over-interpreted in either direction.

Itch and sleep, mood and daily life

Itch is not “minor” simply because it is not pain. Research specifically associates HS-related pruritus with reduced quality of life, greater depressive burden and impaired social functioning. It is also not something that only affects skin: a study comparing 108 people with HS to 50 people without it found that both itch and pain contributed to poorer sleep quality and insomnia, with pain showing the strongest relationship on several measures but itch still playing a meaningful part.

In practice, that means itch is worth mentioning if it:

• keeps you awake or wakes you repeatedly during the night;
• leads you to scratch skin that is already inflamed or healing;
• interferes with concentration, work or caregiving;
• affects which clothes you can wear or how you move through the day;
• has recently changed in intensity, location or pattern.

The question that matters is not “is my itch as bad as my pain?” It is “is this itch materially affecting my life?” If the answer is yes, that is reason enough to raise it.

What to notice before your appointment

You do not need a formal itch diary unless you find one genuinely useful. A few concrete observations, gathered over a week or two, are usually enough to change the quality of the conversation.

Where — armpit, groin, under the breasts, buttocks, around a scar, around an active lesion, somewhere else.

When — before a lesion becomes visible, during an active flare, while a wound is healing, after a dressing change or product use, mainly at night, or no clear pattern at all.

What it feels like — itch, tingling, burning, stinging, a crawling sensation, mixed with pain, or hard to put into words. These are descriptions, not diagnostic categories — don’t worry about picking the “correct” word.

What comes with it — pain, swelling, drainage, warmth, visible irritation, disrupted sleep, or nothing else obvious.

How much it matters — a single number is less useful here than a sentence. “It wakes me most nights” or “it doesn’t really affect what I do” tells a clinician far more than a 0–10 score alone.

Turning “I’m always itchy” into “the itching under my left arm started about a day before the lump appeared, on three separate occasions this year” gives your clinician something they can actually work with.

What can help right now

The honest, if less satisfying, answer is that there is no single HS-specific anti-itch treatment shown to work for everyone — because the contributors to itch differ from person to person and from situation to situation. Be cautious of anything marketed as a universal fix.

What tends to be more productive is matching the response to the likely context:

• If itch tracks with active inflammation — the more relevant conversation is usually about whether your underlying HS is well controlled, not about finding a topical itch remedy to layer on top.
• If itch started or changed after a new treatment or product — say so explicitly to the prescriber or pharmacist. This may be a tolerability issue with that specific product, separate from HS itself.
• If you are scratching skin that is already inflamed or healing — mention this directly. Repeated scratching of vulnerable skin can add irritation on top of an already-compromised area, and breaking that cycle may be worth discussing even if the itch itself remains unresolved.
• If itch is around a wound — follow your existing wound-care plan, and check with your care team before adding any cream or product underneath a dressing.
• If the itch is persistent, unexplained, or doesn’t fit any of the above — it is reasonable to ask whether something other than HS — another skin condition, a contact reaction, a medication effect — should be considered alongside it.

There is not enough evidence to assume HS itch is primarily histamine-driven, so do not assume an over-the-counter antihistamine will resolve it. If you are considering one for persistent itch, a pharmacist or your care team can advise whether it is appropriate alongside anything else you take.

Questions to bring to your dermatologist

1. Could this itching be part of my HS, or is another cause worth considering?
2. Does the timing of my itch relative to my flares tell us anything useful?
3. Could a treatment, dressing or skincare product I’m using be contributing?
4. If the itch continues even when things look relatively quiet, should it be assessed separately?
5. What’s a reasonable next step if the itching is affecting my sleep or daily life?

These are meant as open questions to start a conversation, not a checklist that leads to one predetermined answer.

The bottom line

Itching deserves more attention in HS than it typically gets. Research supports treating it as a real, sometimes significant part of the condition — one associated with disrupted sleep, lower quality of life and psychosocial burden for a substantial number of people.

At the same time, itch is a nonspecific symptom. It cannot, on its own, confirm infection, prove healing, predict a flare, or tell you how your disease is progressing overall. What makes it useful is context: where it happens, when it happens, and what accompanies it.

If itching is part of your experience of HS, it does not need to wait behind pain to be worth mentioning. Notice the pattern, describe the sensation, and bring it to your next appointment as its own topic.