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Acne Inversa FAQ

Common questions answered clearly and briefly.

60-second summary

If you only remember five things, remember these:

  • Acne Inversa (Hidradenitis Suppurativa) and HS are names for the same condition — not separate diseases.
  • It is not contagious and not caused by poor hygiene.
  • There is currently no cure, but treatment can meaningfully reduce flares, pain, and progression.
  • Response timelines differ by treatment — weeks for topical care, 8–12 weeks for oral antibiotics, 16 weeks for biologics.
  • A second opinion is worth seeking if you're unsure about a treatment plan, though the diagnosis itself is rarely in doubt for an experienced dermatologist.

Most of what patients ask early on comes back to the same handful of questions. Having clear answers to those can make later, more specific conversations easier.

Individual answers can still vary — your own case, other health conditions, and local treatment access all shape what applies to you specifically.

If your question isn't answered here, the community Q&A lets you ask it directly.

Ask the HS community

This summary is written and updated together with the full text. The evidence, limitations and sources stay unchanged in the article below.

Continue to the detailed explanation

These are the questions people ask most often about Acne Inversa / Hidradenitis Suppurativa, gathered from across this site's articles and grouped by theme. Each answer is short by design — the linked article behind it goes into full detail.

This page is not a substitute for a medical consultation. It's a starting point for understanding common terms and expectations before or after an appointment.

What Is Acne Inversa?

The full introduction to the condition.

 Diagnosis Guide

How a diagnosis is reached.

 Treatment Options

The treatment classes patients may discuss with a dermatologist.

 Ask the HS community

Ask a question that isn't covered here.

Basics

Is Acne Inversa the same as Hidradenitis Suppurativa? Yes — Acne Inversa and Hidradenitis Suppurativa (HS) are two names for the same chronic inflammatory skin condition. Acne Inversa is more common in European dermatology; Hidradenitis Suppurativa dominates international medical literature.

Is Acne Inversa contagious? No. It cannot be spread through skin contact, shared towels, clothing, or close physical contact, because it is not caused by a transmissible pathogen. Bacteria found in lesions are a secondary factor, not the cause.

  • Which body areas are most affected? Armpits, groin, inner thighs, under the breasts, buttocks, and the perianal and lower abdominal region — areas where skin folds rub together.
  • Is it hereditary if it runs in the family? Up to about 40% of people with HS report a relative with the condition. What's inherited is a genetic predisposition, not an infection — family clustering does not mean contagion.
  • Can I swim or go to the gym with HS? Yes. Since HS isn't transmissible, there's no risk to others. A sterile dressing over open wounds can help protect your own skin from irritation.

Diagnosis

Does any single symptom prove it's HS? No single symptom does. Clinical assessment combines typical lesions, typical body sites, and a recurring or chronic course — not one finding in isolation.

Do tunnels always appear early? No. Tunnels and scarring can develop over the course of the disease and don't need to be clearly visible for early symptoms to still be HS.

  • Does pain count as an HS symptom? Yes — pain from inflamed nodules, abscesses, open areas, or scarred tissue can be significant and is worth describing concretely in an appointment.
  • Should I get a second opinion? Worth considering if you're unsure about your treatment plan. The diagnosis itself is rarely the issue for an experienced dermatologist — the proposed plan is what varies most between clinicians.

Treatment

How fast will treatment help? It depends entirely on the treatment. Antiseptic washes may improve mild disease over weeks. Oral antibiotics are typically trialed for 8–12 weeks before assessing effect. Biologics are formally assessed at 16 weeks. Surgery on an individual tunnel can heal that specific area immediately, without changing the underlying disease process.

Is a cure coming? Not in the strict sense — no treatment currently permanently removes the underlying inflammatory tendency. Several newer targeted therapies are in the research pipeline, and the field is more active than it has been in decades, but the realistic goal today is better disease control and longer remission, not a biological cure.

Daily life

Is joining a patient organization worth it? Many patients find real value in connecting with others who understand the condition, plus practical resources on navigating care systems and workplace or disability questions — it's a personal choice, not a requirement.

What actually helps day to day? What helps varies by person, but tracking flares against your own routines — clothing, sweat, stress, sleep — tends to be more useful than following generic advice.

Where to go next

  • New to a diagnosis? Start with the first-30-days guide.
  • Preparing for an appointment? Use the treatment consultation guide.
  • Question not covered here? Ask the HS community directly.

When not to wait for a routine appointment

  • Fever, spreading redness, or feeling significantly unwell
  • Pain severe enough to limit sitting, walking, or arm movement
  • A wound that is spreading, bleeding heavily, or not safely manageable at home

Internal links

Is Acne Inversa contagious?

The full answer, with sources.

 Symptoms: what to watch for

A closer look at symptom patterns and what counts as evidence.

 The first weeks after diagnosis

Second opinions, treatment timelines, and what to expect early on.

 What Is Acne Inversa?

The full introduction this FAQ summarizes.

Key sources for this pillar page

Last editorially reviewed:

  1. S2k guideline on the therapy of hidradenitis suppurativa / acne inversa AWMF, 2024
  2. North American clinical management guidelines for hidradenitis suppurativa, Part I Journal of the American Academy of Dermatology, 2019
  3. Hidradenitis suppurativa Nature Reviews Disease Primers, 2020