1B75.4

ICD-11 MMS 2026-01

Chronic deep bacterial folliculitis

Description

A chronic pyogenic infection by Staphylococcus aureus involving the whole depth of the hair follicle. Sycosis occurs mostly in males after puberty, and commonly involves the follicles of the beard. Most cases begin in the third or fourth decade. Unknown host factors appear to be important in the chronicity of the infection. Extensive follicular destruction and scarring may ensue (lupoid sycosis).

Index terms

  • Chronic deep bacterial folliculitis
  • sycosis vulgaris
  • ulerythema sycosiforme
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  • Sycosis barbae
  • Lupoid sycosis
  • Sycosis lupoid
  • Sycosis
  • sycosis, nos

Exclusions from above levels

  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Foundation children elsewhere

  • ED81.0 – Folliculitis cruris pustulosa atrophicans

Sibling codes

  • 1B75.0 – Furuncle
  • 1B75.1 – Carbuncle
  • 1B75.2 – Furunculosis
  • 1B75.3 – Pyogenic abscess of the skin
  • 1B75.Z – Deep bacterial folliculitis or pyogenic abscess of the skin, unspecified

Foundation entity

Chronic deep bacterial folliculitis – http://id.who.int/icd/entity/25801498

Part of: 1B75: Deep bacterial folliculitis or pyogenic abscess of the skin › 01: Certain infectious or parasitic diseases