Is hidradenitis suppurativa more an autoinfection than pure autoinflammation? - Report - MDSpire

Is hidradenitis suppurativa more an autoinfection than pure autoinflammation?

  • By

  • Maïa Delage

  • Olivier Join-Lambert

  • Snaigune Miskinyte

  • Alain Hovnanian

  • Aude Nassif

  • July 6, 2026

  • 0 min

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Clinical Report: Is Hidradenitis Suppurativa Primarily an Autoinfection?

Background

Hidradenitis suppurativa is a chronic inflammatory skin condition that significantly impacts patients' quality of life. The underlying mechanisms of HS remain poorly understood. Recent evidence points towards a potential role of the microbiome and host immune responses in the pathogenesis of HS.

Data Highlights

No numerical or trial data presented in the article.

Key Findings

  • HS lesions contain viable bacteria within the dermis, contrary to normal skin where bacteria are absent.
  • The bacterial flora in HS varies with disease severity, showing increased diversity and antimicrobial resistance from Hurley stage I to stage III.
  • Commonly isolated bacteria include anaerobes such as Prevotella and Porphyromonas, with polymicrobial infections prevalent in HS abscesses.
  • Previous studies misidentified bacterial presence due to inadequate culture techniques, leading to underreporting of viable bacteria in HS lesions.
  • Immune responses in HS lesions are robust, suggesting a significant role of dermal bacteria in disease pathology.

Clinical Implications

Clinicians should consider the microbiome's role in HS when developing management plans for affected patients.

Conclusion

The reclassification of HS as an autoinfectious disease offers insights into its pathogenesis.

Related Resources & Content

  1. Zouboulis, C. C., JDDG, 2024 -- S2k guideline for the treatment of hidradenitis suppurativa / acne inversa – Short version
  2. New England Journal of Medicine, 2016 -- Two Phase 3 Trials of Adalimumab for Hidradenitis Suppurativa
  3. Frontiers in Immunology, 2026 -- Meta-inflammation in Hidradenitis Suppurativa: from pathogenic evidence to therapeutic approaches
  4. Frontiers in Immunology, 2026 -- Dietary patterns, metabolic pathways and metainflammation in hidradenitis suppurativa: a systematic review
  5. Dermatology and Therapy, 2026 -- Modalities of Combined Medical and Surgical Treatment in Hidradenitis Suppurativa: A Systematic Review of Efficacy and Safety
  6. Frontiers in Immunology — Differentiation defects reposition sebaceous glands as inflammatory instigators in the early pathogenesis of hidradenitis suppurativa
  7. S2k guideline for the treatment of hidradenitis suppurativa / acne inversa – Short version - Zouboulis - 2024 - JDDG: Journal der Deutschen Dermatologischen Gesellschaft - Wiley Online Library
  8. Two Phase 3 Trials of Adalimumab for Hidradenitis Suppurativa | New England Journal of Medicine
  9. The Microbiome in Hidradenitis Suppurativa Tunnels: A Systematic Review - PMC

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