What is the initial inflammatory event in the pathogenesis of hidradenitis suppurativa (HS)?

Updated: Nov 20, 2020
  • Author: Marina Jovanovic, MD, PhD; Chief Editor: William D James, MD  more...
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The earliest inflammatory event in hidradenitis suppurativa is the rupture of the follicular epithelium. The cause of the rupture is not known, although friction in intertriginous locations may be a contributing factor. The rupture is followed by the spillage of foreign-body material into the dermis, which initiates an inflammatory response, resulting in foreign-body granuloma formation. Epithelial strands form draining sinuses in this inflammatory tissue. Colonization with bacteria, usually coagulase-negative staphylococci, can aggravate the chronic inflammation. [28, 30]

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